diff --git a/package-lock.json b/package-lock.json
index 05d91b5..b0fcfc6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "chai",
-  "version": "0.1.13",
+  "version": "0.1.14",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "chai",
-      "version": "0.1.13",
+      "version": "0.1.14",
       "dependencies": {
         "@ant-design/charts": "^2.1.1",
         "@ant-design/colors": "^7.0.2",
@@ -31,7 +31,7 @@
         "jotai-optics": "^0.4.0",
         "js-md5": "^0.8.3",
         "js-yaml": "4.1.0",
-        "libchai": "^0.1.13",
+        "libchai": "^0.1.14",
         "lodash-es": "^4.17.21",
         "mathjs": "^13.0.1",
         "nanoid": "^5.0.7",
@@ -8163,9 +8163,9 @@
       }
     },
     "node_modules/libchai": {
-      "version": "0.1.13",
-      "resolved": "https://registry.npmjs.org/libchai/-/libchai-0.1.13.tgz",
-      "integrity": "sha512-O1tbmRH+OKFpfigiydDZ956GcZA83SO/TDtWHX7y9ht8eUBx51ujB6wqXQ/APOUIilhEVsyrCDB3s6J+BUot0Q=="
+      "version": "0.1.14",
+      "resolved": "https://registry.npmmirror.com/libchai/-/libchai-0.1.14.tgz",
+      "integrity": "sha512-QM7Yud0179PYWfwRZVa39qBu/DmsYpo6C00KqX6e/i1H4cMC/jBLZgrDvHJLf87dI6XXYzuRF+aFSpYLNhQENA=="
     },
     "node_modules/lilconfig": {
       "version": "2.1.0",
diff --git a/package.json b/package.json
index 1d3b708..07fedb7 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "chai",
   "private": true,
-  "version": "0.1.13",
+  "version": "0.1.14",
   "type": "module",
   "scripts": {
     "start": "vite --mode CF",
@@ -45,7 +45,7 @@
     "jotai-optics": "^0.4.0",
     "js-md5": "^0.8.3",
     "js-yaml": "4.1.0",
-    "libchai": "^0.1.13",
+    "libchai": "^0.1.14",
     "lodash-es": "^4.17.21",
     "mathjs": "^13.0.1",
     "nanoid": "^5.0.7",
diff --git a/src/components/Algebra.tsx b/src/components/Algebra.tsx
index 4891f5a..28cf29c 100644
--- a/src/components/Algebra.tsx
+++ b/src/components/Algebra.tsx
@@ -6,10 +6,10 @@ import {
   ProFormText,
 } from "@ant-design/pro-components";
 import { Button, Form, Space, notification } from "antd";
-import { CloseCircleOutlined, CopyOutlined } from "@ant-design/icons";
 import type { Rule } from "~/lib";
 import { algebraAtom, useAddAtom } from "~/atoms";
 import { defaultAlgebra } from "~/lib";
+import { ArrowDownOutlined, ArrowUpOutlined } from "@ant-design/icons";
 
 interface AlgebraForm {
   name: string;
@@ -69,10 +69,32 @@ export default function Algebra({
       <ProFormList
         name="rules"
         label="拼写运算"
-        copyIconProps={{ Icon: CopyOutlined, tooltipText: "复制此项到末尾" }}
-        deleteIconProps={{
-          Icon: CloseCircleOutlined,
-          tooltipText: "删除这条运算",
+        actionRender={(field, action, defaultActionDom, count) => {
+          return [
+            ...defaultActionDom,
+            <ArrowUpOutlined
+              key="up_arrow"
+              style={{ marginLeft: "5px" }}
+              onClick={() => {
+                if (field.name === 0) {
+                  action.move(field.name, count - 1);
+                } else {
+                  action.move(field.name, field.name - 1);
+                }
+              }}
+            />,
+            <ArrowDownOutlined
+              key="down_arrow"
+              style={{ marginLeft: "5px" }}
+              onClick={() => {
+                if (field.name === count - 1) {
+                  action.move(field.name, 0);
+                } else {
+                  action.move(field.name, field.name + 1);
+                }
+              }}
+            />,
+          ];
         }}
       >
         <ProFormGroup key="group">
diff --git a/src/lib/assembly.ts b/src/lib/assembly.ts
index 228a591..f3d36c4 100644
--- a/src/lib/assembly.ts
+++ b/src/lib/assembly.ts
@@ -337,8 +337,8 @@ export const assemble = (
   const priorityMap = getPriorityMap(config.priority);
   return result.map((x) => {
     const hash = `${x.name}-${x.pinyin_list.join(",")}`;
-    const level = priorityMap.get(hash) ?? -1;
-    return { ...x, level };
+    const level = priorityMap.get(hash);
+    return level !== undefined ? { ...x, level } : x;
   });
 };