diff --git a/package.json b/package.json
index 1123420..ecff20a 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,6 @@
     "react": "^16.4.2",
     "react-dom": "^16.4.2",
     "react-lazyload": "latest",
-    "react-linkify": "^0.2.2",
     "react-scripts": "1.1.4",
     "react-timeago": "^4.1.9"
   },
diff --git a/src/Flows.js b/src/Flows.js
index a082e2e..ce3deae 100644
--- a/src/Flows.js
+++ b/src/Flows.js
@@ -237,22 +237,6 @@ class FlowSidebar extends PureComponent {
         }
     }
 
-    star_brush() {
-        let count=prompt('Count:');
-        if(count) {
-            let reqs=[];
-            for(let i=parseInt(count);i;i--)
-                reqs.push(API.set_attention(this.state.info.pid,false,this.props.token));
-            Promise.all(reqs)
-                .then(()=>{
-                    alert('Completed!')
-                })
-                .catch((e)=>{
-                    alert('Failed!\n\n'+e);
-                })
-        }
-    }
-
     show_reply_bar(name,event) {
         if(this.reply_ref.current && event.target.tagName.toLowerCase()!=='a') {
             let text=this.reply_ref.current.get();
@@ -262,19 +246,11 @@ class FlowSidebar extends PureComponent {
     }
 
     render() {
-        const star_brush=localStorage['STAR_BRUSH']==='on';
-
         if(this.state.loading_status==='loading')
             return (<p className="box box-tip">加载中……</p>);
         return (
             <div className="flow-item-row sidebar-flow-item">
                 <div className="box box-tip">
-                    {(star_brush && !!this.props.token) &&
-                        <span>
-                            <a onClick={this.star_brush.bind(this)}>-</a>
-                            &nbsp;/&nbsp;
-                        </span>
-                    }
                     {!!this.props.token &&
                         <span>
                             <a onClick={this.report.bind(this)}>举报</a>
diff --git a/src/text_splitter.js b/src/text_splitter.js
index b11e12a..4eb694d 100644
--- a/src/text_splitter.js
+++ b/src/text_splitter.js
@@ -1,4 +1,4 @@
-export const PID_RE=/(^|[^\d])([1-9]\d{4,5})(?!\d)/g;
+export const PID_RE=/(^|[^\d])([1-9]\d{4,5})(?!\d|\u20e3)/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 URL_RE=/(?:^|\b)((?:https?:\/\/)?(?:[\w-]+\.)+[a-zA-Z]{2,3}(?::\d{1,5})?(?:\/[\w~!@#$%^&*()-_=+[\];,./?]*)?)(?:$|\b)/gi;