diff --git a/404.html b/404.html
index 9073cbf..bdeecb4 100644
--- a/404.html
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@@ -164,7 +164,7 @@
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-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
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diff --git a/categories/index.html b/categories/index.html
index 5f7bd40..fb6920c 100644
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@@ -170,7 +170,7 @@
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             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/index.html b/index.html
index 63a4772..3e7696e 100644
--- a/index.html
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@@ -193,7 +193,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/rapidlinks/快速链接/index.html b/rapidlinks/快速链接/index.html
index e1dc8f0..b264bd4 100644
--- a/rapidlinks/快速链接/index.html
+++ b/rapidlinks/快速链接/index.html
@@ -328,7 +328,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/ratings/index.html b/ratings/index.html
index 5947974..e1f92b4 100644
--- a/ratings/index.html
+++ b/ratings/index.html
@@ -218,7 +218,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/c语言/index.html b/resources/c语言/index.html
index 0c1c647..68cac34 100644
--- a/resources/c语言/index.html
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@@ -329,7 +329,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/index.html b/resources/index.html
index c1ddae4..9da04cc 100644
--- a/resources/index.html
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@@ -357,7 +357,7 @@ Edge或Chrome浏览器如果加载不出PDF预览，直接右键PDF区域选择
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/page/2/index.html b/resources/page/2/index.html
index 568b9cf..9392557 100644
--- a/resources/page/2/index.html
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@@ -329,7 +329,7 @@ Edge或Chrome浏览器如果加载不出PDF预览，直接右键PDF区域选择
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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+    height: 210px;  
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diff --git a/resources/protocol/index.html b/resources/protocol/index.html
index abe4306..f520624 100644
--- a/resources/protocol/index.html
+++ b/resources/protocol/index.html
@@ -247,7 +247,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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@@ -276,7 +276,7 @@
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diff --git a/resources/大化/index.html b/resources/大化/index.html
index 35cbca0..46209d5 100644
--- a/resources/大化/index.html
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@@ -329,7 +329,7 @@
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         <div id="qr-code" class="hidden">
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-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/大物活页/index.html b/resources/大物活页/index.html
index 7c503b7..20fb32f 100644
--- a/resources/大物活页/index.html
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@@ -329,7 +329,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/孙子兵法/index.html b/resources/孙子兵法/index.html
index 3eb6eaf..9183464 100644
--- a/resources/孙子兵法/index.html
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@@ -314,7 +314,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/工图习题/index.html b/resources/工图习题/index.html
index a0dedfd..f01426c 100644
--- a/resources/工图习题/index.html
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@@ -310,7 +310,7 @@
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         <div id="qr-code" class="hidden">
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-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/数值分析/index.html b/resources/数值分析/index.html
index 3bdcfae..175c636 100644
--- a/resources/数值分析/index.html
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@@ -385,7 +385,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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@@ -414,7 +414,7 @@
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diff --git a/resources/新通用教师用书1/index.html b/resources/新通用教师用书1/index.html
index 8359448..d2286ff 100644
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@@ -321,7 +321,7 @@
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-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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@@ -350,7 +350,7 @@
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diff --git a/resources/概率论/index.html b/resources/概率论/index.html
index 779e779..8c5abfe 100644
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@@ -330,7 +330,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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@@ -359,7 +359,7 @@
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diff --git a/resources/概率论习题/index.html b/resources/概率论习题/index.html
index 0da68c4..c9240b3 100644
--- a/resources/概率论习题/index.html
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@@ -329,7 +329,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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@@ -358,7 +358,7 @@
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diff --git a/resources/毛概复习指南/index.html b/resources/毛概复习指南/index.html
index a8cbf18..492cfdf 100644
--- a/resources/毛概复习指南/index.html
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@@ -314,7 +314,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/画法几何ppt/index.html b/resources/画法几何ppt/index.html
index 11fdf26..e7ab456 100644
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@@ -310,7 +310,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/线性代数/index.html b/resources/线性代数/index.html
index d5fd720..e0659cd 100644
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@@ -482,7 +482,7 @@
         Ember
         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/食品安全/index.html b/resources/食品安全/index.html
index d4929b6..06ae011 100644
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@@ -314,7 +314,7 @@
         Ember
         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/高数/index.html b/resources/高数/index.html
index 733d937..9413019 100644
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+++ b/resources/高数/index.html
@@ -346,7 +346,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/resources/高数习题/index.html b/resources/高数习题/index.html
index 3914bc7..f9865dc 100644
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/search/index.html b/search/index.html
index 23e53a4..c7735ec 100644
--- a/search/index.html
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@@ -226,7 +226,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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diff --git a/tags/index.html b/tags/index.html
index 12bb7f0..8583752 100644
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@@ -170,7 +170,7 @@
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         <div id="qr-code" class="hidden">
             <div class="qr-text">联系网站管理员</div> 
-            <img src="https://emberqr.github.io/NEUsitefiles/ember.png" alt="QR Code" />
+            <img src="https://www.xn--xhq44jb2fzpc.com/qrcode/ember.png" alt="QR Code" />
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@@ -199,7 +199,7 @@
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