diff --git a/playground/src/components/latex-text/index.vue b/playground/src/components/latex-text/index.vue
index d49b7bf..3165021 100644
--- a/playground/src/components/latex-text/index.vue
+++ b/playground/src/components/latex-text/index.vue
@@ -17,7 +17,16 @@ const props = defineProps<{
 
 const regex_dollar = /(\$[^$]+\$)/g
 const regex_tag = /(<span data-.+?="[^"]*"><\/span>)/g
-const regex_html = /(<\/?[a-zA-Z][^>]*>)/g
+// 仅匹配合法 HTML 标签，避免将 $a<b$ 中的 <b 误判为标签并吞掉后续内容
+const regex_html = /(<\/?[a-zA-Z][a-zA-Z0-9]*(?:\s+[^>]*)?\s*>)/g
+
+function escapeHtml(text: string) {
+  return text
+    .replaceAll('&', '&amp;')
+    .replaceAll('<', '&lt;')
+    .replaceAll('>', '&gt;')
+    .replaceAll('"', '&quot;')
+}
 
 function addLatexText(list: any[], text: string) {
   list.push({
@@ -40,7 +49,9 @@ function parseLatexDollar(list: any[], text: string) {
       if (part.startsWith('$') && part.endsWith('$') && part.length > 2) {
         addLatexText(list, part.substring(1, part.length - 1))
       } else if (part) {
-        list.push({ content: part.replace(/\\([{}])/g, '$1') })
+        list.push({
+          content: escapeHtml(part.replace(/\\([{}])/g, '$1')),
+        })
       }
     }
   }
diff --git a/playground/src/views/question-bank/paper-mgr/home.vue b/playground/src/views/question-bank/paper-mgr/home.vue
index dc955ec..c061f03 100644
--- a/playground/src/views/question-bank/paper-mgr/home.vue
+++ b/playground/src/views/question-bank/paper-mgr/home.vue
@@ -438,6 +438,7 @@ onMounted(() => {
   <div class="paper-mgr g-container">
     <MjTable
       ref="gridRef"
+      hide-edit
       hide-remove
       :edit-form="editForm"
       :grid="grid"
@@ -477,6 +478,9 @@ onMounted(() => {
             <el-button size="small">更多</el-button>
             <template #dropdown>
               <el-dropdown-menu>
+                <el-dropdown-item @click="gridRef?.edit(row)">
+                  编辑
+                </el-dropdown-item>
                 <el-dropdown-item
                   v-if="row.uploadStatus !== 1"
                   @click="triggerUploadPdf(row)"