diff --git a/src/panel/enemyCritical.vue b/src/panel/enemyCritical.vue
index febed2b..759788b 100644
--- a/src/panel/enemyCritical.vue
+++ b/src/panel/enemyCritical.vue
@@ -63,10 +63,12 @@
                 >
                 <span
                     ><span style="font-family: 'Fira Code'">{{
-                        nowDamage[0] < 0 && !has(enemy.damage) ? '=>' : ''
+                        (nowDamage[0] as number) < 0 && !has(enemy.damage)
+                            ? '=>'
+                            : ''
                     }}</span
                     >{{
-                        nowDamage[0] < 0 && !has(enemy.damage)
+                        (nowDamage[0] as number) < 0 && !has(enemy.damage)
                             ? format(-nowDamage[0])
                             : format(nowDamage[0])
                     }}</span
diff --git a/src/ui/studied.vue b/src/ui/studied.vue
index 919cfc2..911437f 100644
--- a/src/ui/studied.vue
+++ b/src/ui/studied.vue
@@ -12,11 +12,6 @@
                 <div id="studied-main">
                     <div v-for="(num, i) of studied" :key="i">
                         <div id="studied-rough">
-                            <right-outlined
-                                :folded="!!folded[i]"
-                                @click="folded[i] = !folded[i]"
-                                id="studied-fold"
-                            />
                             <span
                                 >{{ i }}. {{ skills[i] }}，剩余{{
                                     last[i]