diff --git a/src/components/Search.tsx b/src/components/Search.tsx
index a6263e7..a7362e9 100644
--- a/src/components/Search.tsx
+++ b/src/components/Search.tsx
@@ -1,5 +1,5 @@
-import { useEffect, useState, useTransition } from 'react';
-import { useSearchParams } from 'react-router-dom';
+import { useEffect, useMemo, useState, useTransition } from 'react';
+import { Link, useSearchParams } from 'react-router-dom';
 import {
   Header,
   Input,
@@ -14,10 +14,10 @@ import PersonCard from '@/components/PersonCard';
 import getGrade, { currentYear } from '@/utils/getGrade';
 import compareGrades from '@/utils/compareGrades';
 import {
-  provinces,
   type OIer,
   genders,
   searchableGenderKeys,
+  provincesWithId,
 } from '@/libs/OIerDb';
 import styles from './Search.module.less';
 
@@ -49,6 +49,18 @@ const Search: React.FC = () => {
       school: '',
     });
 
+  const provinces = useMemo(
+    () =>
+      Object.entries(provincesWithId).map(([id, province]) => ({
+        key: id,
+        value: province,
+        text: `${province} (${id})`,
+        content: province,
+        label: { content: id, basic: true, size: 'mini' },
+      })),
+    []
+  );
+
   const province = searchParams.get('province') || '';
   const setProvince = (province: string) => setSearchParams({ province });
 
@@ -70,14 +82,15 @@ const Search: React.FC = () => {
 
     startTransition(() => {
       let result: OIer[] = [];
+
       if (!advanced) {
         result = OIerDb.oiers.filter(
           (oier) => oier.lowered_name === input || oier.initials === input
         );
+      } else if (!input && !grade && !school) {
+        result = [];
       } else {
         result = OIerDb.oiers.filter((oier) => {
-          if (!(input || province || grade || school)) return false;
-
           let res = Boolean(input || province || grade || school || gender);
 
           if (input) {
@@ -156,11 +169,7 @@ const Search: React.FC = () => {
                 search
                 selection
                 clearable
-                options={provinces.map((province) => ({
-                  key: province,
-                  value: province,
-                  text: province,
-                }))}
+                options={provinces}
                 defaultValue={province}
                 onChange={(_, { value }) => setProvince(value as string)}
               />
@@ -231,7 +240,18 @@ const Search: React.FC = () => {
           <>
             {input || province || grade || school || gender ? (
               <div style={{ paddingTop: '1rem' }}>
-                {gender ? '暂时不支持仅按照性别搜索选手。' : '未找到结果。'}
+                {gender || province ? (
+                  gender ? (
+                    '暂时不支持仅按照性别搜索选手。'
+                  ) : (
+                    <>
+                      请访问「
+                      <Link to="/oiers">选手</Link>」页面查询某省的所有选手。
+                    </>
+                  )
+                ) : (
+                  '未找到结果。'
+                )}
               </div>
             ) : (
               <></>
diff --git a/src/libs/OIerDb.ts b/src/libs/OIerDb.ts
index daf76ea..4ad97fe 100644
--- a/src/libs/OIerDb.ts
+++ b/src/libs/OIerDb.ts
@@ -442,42 +442,46 @@ export const initDb = async (setProgressPercent?: (p: number) => void) => {
 };
 
 // 省份列表
-export const provinces = [
-  '安徽',
-  '北京',
-  '福建',
-  '甘肃',
-  '广东',
-  '广西',
-  '贵州',
-  '海南',
-  '河北',
-  '河南',
-  '黑龙江',
-  '湖北',
-  '湖南',
-  '吉林',
-  '江苏',
-  '江西',
-  '辽宁',
-  '内蒙古',
-  '山东',
-  '山西',
-  '陕西',
-  '上海',
-  '四川',
-  '天津',
-  '新疆',
-  '浙江',
-  '重庆',
-  '宁夏',
-  '云南',
-  '澳门',
-  '香港',
-  '青海',
-  '西藏',
-  '台湾',
-] as const;
+export const provincesWithId = {
+  AH: '安徽',
+  BJ: '北京',
+  FJ: '福建',
+  GS: '甘肃',
+  GD: '广东',
+  GX: '广西',
+  GZ: '贵州',
+  HI: '海南',
+  HE: '河北',
+  HA: '河南',
+  HL: '黑龙江',
+  HB: '湖北',
+  HN: '湖南',
+  JL: '吉林',
+  JS: '江苏',
+  JX: '江西',
+  LN: '辽宁',
+  NM: '内蒙古',
+  SD: '山东',
+  SX: '山西',
+  SN: '陕西',
+  SH: '上海',
+  SC: '四川',
+  TJ: '天津',
+  XJ: '新疆',
+  ZJ: '浙江',
+  CQ: '重庆',
+  NX: '宁夏',
+  YN: '云南',
+  MO: '澳门',
+  HK: '香港',
+  QH: '青海',
+  XC: '西藏',
+  TW: '台湾',
+} as const;
+
+export const provinces = Object.values(
+  provincesWithId
+) as (typeof provincesWithId)[keyof typeof provincesWithId][];
 
 // 奖项列表及颜色
 export const awardColors = {
diff --git a/src/pages/contest/[id].tsx b/src/pages/contest/[id].tsx
index 905e12b..1195166 100644
--- a/src/pages/contest/[id].tsx
+++ b/src/pages/contest/[id].tsx
@@ -20,7 +20,7 @@ import getProgress from '@/utils/getProgress';
 import fixContestName from '@/utils/fixContestName';
 import Pagination from '@/components/Pagination';
 import styles from './[id].module.less';
-import { awardColors, awardLevels } from '@/libs/OIerDb';
+import { awardColors, awardLevels, provincesWithId } from '@/libs/OIerDb';
 import compareGrades from '@/utils/compareGrades';
 
 const NotFound = lazy(() => import('@/pages/404'));
@@ -52,12 +52,23 @@ const Contest: React.FC = () => {
     setSearchParams({ grade: String(grade), page: '1' });
   };
 
-  const provinces = useMemo(
-    () => [
+  const provinces = useMemo(() => {
+    const withId2 = Object.fromEntries(
+      Object.entries(provincesWithId).map(([id, province]) => [province, id])
+    );
+
+    return [
       ...new Set(contest.contestants.map((contestant) => contestant.province)),
-    ],
-    [id]
-  );
+    ]
+      .map((province) => ({
+        key: withId2[province],
+        value: province,
+        text: `${province} (${withId2[province]})`,
+        content: province,
+        label: { content: withId2[province], basic: true, size: 'mini' },
+      }))
+      .sort((a, b) => a.key.localeCompare(b.key));
+  }, [id]);
 
   const grades = useMemo(
     () => [
@@ -172,11 +183,7 @@ const Contest: React.FC = () => {
             clearable
             placeholder="省份"
             value={province}
-            options={provinces.map((province) => ({
-              key: province,
-              value: province,
-              text: province,
-            }))}
+            options={provinces}
             onChange={(_, { value }) => setProvince(value as string)}
           />
         </Form.Group>