diff --git a/fis-conf.js b/fis-conf.js
index 1c2ea2810..0390528bb 100644
--- a/fis-conf.js
+++ b/fis-conf.js
@@ -313,7 +313,7 @@ if (fis.project.currentMedia() === 'publish') {
   env.get('project.ignore').push('sdk/**');
   env.set('project.files', ['examples/sdk-placeholder.html']);
 
-  env.match('/{examples,scss}/(**)', {
+  env.match('/{examples,scss,src}/(**)', {
     release: '/$1'
   });
 
@@ -354,8 +354,9 @@ if (fis.project.currentMedia() === 'publish') {
     rExt: '.js'
   });
 
-  env.match('/examples/sdk-mod.js', {
-    isMod: false
+  env.match('/examples/mod.js', {
+    isMod: false,
+    optimizer: fis.plugin('uglify-js')
   });
 
   env.match('*.{js,jsx,ts,tsx}', {
@@ -388,7 +389,10 @@ if (fis.project.currentMedia() === 'publish') {
         '!echarts/**',
         '!papaparse/**',
         '!docsearch.js/**',
-        '!monaco-editor/**.css'
+        '!monaco-editor/**.css',
+        '!src/components/RichText.tsx',
+        '!src/components/Tinymce.tsx',
+        '!src/lib/renderers/Form/CityDB.js'
       ],
 
       'rich-text.js': [
diff --git a/src/components/condition-builder/Field.tsx b/src/components/condition-builder/Field.tsx
index 49e1af4d8..93588bbfa 100644
--- a/src/components/condition-builder/Field.tsx
+++ b/src/components/condition-builder/Field.tsx
@@ -4,7 +4,6 @@ import ListRadios from '../ListRadios';
 import ResultBox from '../ResultBox';
 import {ClassNamesFn, ThemeProps, themeable} from '../../theme';
 import {Icon} from '../icons';
-import {find} from 'lodash';
 import {findTree, noop} from '../../utils/helper';
 
 export interface ConditionFieldProps extends ThemeProps {
diff --git a/src/renderers/Form/City.tsx b/src/renderers/Form/City.tsx
index de634198b..4a0174a42 100644
--- a/src/renderers/Form/City.tsx
+++ b/src/renderers/Form/City.tsx
@@ -1,8 +1,7 @@
 import React from 'react';
 import {FormItem, FormControlProps, FormBaseControl} from './Item';
-import db, {province, city, district} from './CityDB';
 import {ClassNamesFn, themeable, ThemeProps} from '../../theme';
-import {Select} from '../../components';
+import {Select, Spinner} from '../../components';
 import {autobind} from '../../utils/helper';
 import {Option} from './Options';
 import {localeable, LocaleProps} from '../../locale';
@@ -71,6 +70,21 @@ export interface CityPickerState {
   district: string;
   districtCode: number;
   street: string;
+
+  db?: {
+    province: Array<string>;
+    city: {
+      [propName: number]: Array<number>;
+    };
+    district: {
+      [propName: number]:
+        | {
+            [propName: number]: Array<number>;
+          }
+        | Array<number>;
+    };
+    [propName: string]: any;
+  };
 }
 
 export class CityPicker extends React.Component<
@@ -86,7 +100,7 @@ export class CityPicker extends React.Component<
     allowStreet: false
   };
 
-  state = {
+  state: CityPickerState = {
     code: 0,
     province: '',
     provinceCode: 0,
@@ -98,17 +112,38 @@ export class CityPicker extends React.Component<
   };
 
   componentDidMount() {
-    this.syncIn();
+    this.loadDb(() => this.syncIn());
   }
 
   componentDidUpdate(prevProps: CityPickerProps) {
     const props = this.props;
 
     if (props.value !== prevProps.value) {
-      this.syncIn(props);
+      this.loadDb(() => this.syncIn(props));
     }
   }
 
+  loadDb(callback?: () => void) {
+    if (this.state.db) {
+      callback?.();
+      return;
+    }
+
+    (require as any)(['./CityDB.ts'], (db: any) =>
+      this.setState(
+        {
+          db: {
+            ...db.default,
+            province: db.province,
+            city: db.city,
+            district: db.district
+          }
+        },
+        callback
+      )
+    );
+  }
+
   @autobind
   handleProvinceChange(option: Option) {
     this.setState(
@@ -178,8 +213,13 @@ export class CityPicker extends React.Component<
 
   @autobind
   syncIn(props = this.props) {
+    const db = this.state.db!;
     const {value, delimiter} = props;
 
+    if (!db) {
+      return;
+    }
+
     const state = {
       code: 0,
       province: '',
@@ -271,13 +311,13 @@ export class CityPicker extends React.Component<
       translate: __
     } = this.props;
 
-    const {provinceCode, cityCode, districtCode, street} = this.state;
+    const {provinceCode, cityCode, districtCode, street, db} = this.state;
 
-    return (
+    return db ? (
       <div className={cx('CityPicker', className)}>
         <Select
           disabled={disabled}
-          options={province.map(item => ({
+          options={db.province.map(item => ({
             label: db[item],
             value: item
           }))}
@@ -287,20 +327,22 @@ export class CityPicker extends React.Component<
 
         {provinceCode &&
         allowDistrict &&
-        Array.isArray(district[provinceCode]) ? (
+        Array.isArray(db.district[provinceCode]) ? (
           <Select
             disabled={disabled}
-            options={(district[provinceCode] as Array<number>).map(item => ({
+            options={(db.district[provinceCode] as Array<number>).map(item => ({
               label: db[item],
               value: item
             }))}
             value={districtCode}
             onChange={this.handleDistrictChange}
           />
-        ) : allowCity && city[provinceCode] && city[provinceCode].length ? (
+        ) : allowCity &&
+          db.city[provinceCode] &&
+          db.city[provinceCode].length ? (
           <Select
             disabled={disabled}
-            options={city[provinceCode].map(item => ({
+            options={db.city[provinceCode].map(item => ({
               label: db[item],
               value: item
             }))}
@@ -311,11 +353,11 @@ export class CityPicker extends React.Component<
 
         {cityCode &&
         allowDistrict &&
-        district[provinceCode] &&
-        district[provinceCode][cityCode] ? (
+        db.district[provinceCode] &&
+        db.district[provinceCode][cityCode] ? (
           <Select
             disabled={disabled}
-            options={(district[provinceCode][cityCode] as Array<number>).map(
+            options={(db.district[provinceCode][cityCode] as Array<number>).map(
               item => ({
                 label: db[item],
                 value: item
@@ -336,6 +378,8 @@ export class CityPicker extends React.Component<
           />
         ) : null}
       </div>
+    ) : (
+      <Spinner show size="sm" />
     );
   }
 }