diff --git a/src/Flows.css b/src/Flows.css
index a1f4ec0..d8af56a 100644
--- a/src/Flows.css
+++ b/src/Flows.css
@@ -15,7 +15,7 @@
 .root-dark-mode .box {
     background-color: var(--box-bgcolor-dark);
     color: var(--foreground-dark);
-    box-shadow: 0 0 10px rgba(255,255,255,.1);
+    box-shadow: 0 0 5px rgba(255,255,255,.15);
 }
 
 .root-dark-mode .sidebar .box {
diff --git a/src/Sidebar.css b/src/Sidebar.css
index 114f5b4..576f834 100644
--- a/src/Sidebar.css
+++ b/src/Sidebar.css
@@ -40,7 +40,7 @@
 }
 
 .root-dark-mode .sidebar {
-    background-color: hsla(0,0%,5%,.5);
+    background-color: hsla(0,0%,5%,.4);
 }
 
 .sidebar, .sidebar-title {
diff --git a/src/UserAction.js b/src/UserAction.js
index f1ced4b..a3e1aea 100644
--- a/src/UserAction.js
+++ b/src/UserAction.js
@@ -298,7 +298,7 @@ export class ReplyForm extends Component {
         data.append('pid',this.props.pid);
         data.append('text',this.state.text);
         data.append('user_token',this.props.token);
-        fetch(API_BASE+'/api.php?action=docomment'+API_VERSION_PARAM, {
+        fetch(API_BASE+'/api.php?action=docomment'+API_VERSION_PARAM(), {
             method: 'POST',
             headers: {
                 'Content-Type': 'application/x-www-form-urlencoded',
@@ -378,7 +378,7 @@ export class PostForm extends Component {
         if(img)
             data.append('data',img);
 
-        fetch(API_BASE+'/api.php?action=dopost'+API_VERSION_PARAM, {
+        fetch(API_BASE+'/api.php?action=dopost'+API_VERSION_PARAM(), {
             method: 'POST',
             headers: {
                 'Content-Type': 'application/x-www-form-urlencoded',
diff --git a/src/flows_api.js b/src/flows_api.js
index b4ea832..291b30d 100644
--- a/src/flows_api.js
+++ b/src/flows_api.js
@@ -3,11 +3,13 @@ import {PKUHELPER_ROOT} from './infrastructure/const';
 import {API_BASE} from './Common';
 import {cache} from './cache';
 
-export const API_VERSION_PARAM='&PKUHelperAPI=3.0';
+export function API_VERSION_PARAM() {
+    return '&PKUHelperAPI=3.0&jsapiver='+encodeURIComponent((process.env.REACT_APP_BUILD_INFO||'null')+'-'+Math.floor(+new Date()/3600000));
+}
 export {PKUHELPER_ROOT};
 
 function token_param(token) {
-    return API_VERSION_PARAM + (token ? ('&user_token='+token) : '');
+    return API_VERSION_PARAM()+(token ? ('&user_token='+token) : '');
 }
 
 export {get_json};
@@ -72,7 +74,7 @@ export const API={
         data.append('user_token',token);
         data.append('pid',pid);
         data.append('switch',attention ? '1' : '0');
-        return fetch(API_BASE+'/api.php?action=attention'+API_VERSION_PARAM, {
+        return fetch(API_BASE+'/api.php?action=attention'+API_VERSION_PARAM(), {
             method: 'POST',
             headers: {
                 'Content-Type': 'application/x-www-form-urlencoded',
@@ -97,7 +99,7 @@ export const API={
         data.append('user_token',token);
         data.append('pid',pid);
         data.append('reason',reason);
-        return fetch(API_BASE+'/api.php?action=report'+API_VERSION_PARAM, {
+        return fetch(API_BASE+'/api.php?action=report'+API_VERSION_PARAM(), {
             method: 'POST',
             headers: {
                 'Content-Type': 'application/x-www-form-urlencoded',
diff --git a/src/text_splitter.js b/src/text_splitter.js
index a3f6899..241c5e7 100644
--- a/src/text_splitter.js
+++ b/src/text_splitter.js
@@ -1,7 +1,7 @@
 // regexp should match the WHOLE segmented part
 export const PID_RE=/(^|[^\d\u20e3\ufe0e\ufe0f])([1-9]\d{4,5})(?![\d\u20e3\ufe0e\ufe0f])/g;
 export const URL_PID_RE=/((?:https?:\/\/)?pkuhelper\.pku\.edu\.cn\/hole\/?#(?:#|%23)([1-9]\d{4,5}))(?!\d|\u20e3|\ufe0e|\ufe0f)/g;
-export const NICKNAME_RE=/(^|[^A-Za-z])((?:(?:Angry|Baby|Crazy|Diligent|Excited|Fat|Greedy|Hungry|Interesting|Japanese|Kind|Little|Magic|Naïve|Old|Powerful|Quiet|Rich|Superman|THU|Undefined|Valuable|Wifeless|Xiangbuchulai|Young|Zombie)\s)?(?:Alice|Bob|Carol|Dave|Eve|Francis|Grace|Hans|Isabella|Jason|Kate|Louis|Margaret|Nathan|Olivia|Paul|Queen|Richard|Susan|Thomas|Uma|Vivian|Winnie|Xander|Yasmine|Zach)|You Win(?: \d+)?|洞主)(?![A-Za-z])/gi;
+export const NICKNAME_RE=/(^|[^A-Za-z])((?:(?:Angry|Baby|Crazy|Diligent|Excited|Fat|Greedy|Hungry|Interesting|Jolly|Kind|Little|Magic|Naïve|Old|Powerful|Quiet|Rich|Superman|THU|Undefined|Valuable|Wifeless|Xiangbuchulai|Young|Zombie)\s)?(?:Alice|Bob|Carol|Dave|Eve|Francis|Grace|Hans|Isabella|Jason|Kate|Louis|Margaret|Nathan|Olivia|Paul|Queen|Richard|Susan|Thomas|Uma|Vivian|Winnie|Xander|Yasmine|Zach)|You Win(?: \d+)?|洞主)(?![A-Za-z])/gi;
 export const URL_RE=/(^|[^.@a-zA-Z0-9_])((?:https?:\/\/)?(?:(?:[\w-]+\.)+[a-zA-Z]{2,3}|\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})(?::\d{1,5})?(?:\/[\w~!@#$%^&*()\-_=+[\]{};:,./?|]*)?)(?![a-zA-Z0-9])/gi;
 
 export function split_text(txt,rules) {