diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 748be5cd3..5fb9788b6 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -13,10 +13,10 @@ on:
 jobs:
   build:
     name: Build
-    runs-on: macos-10.15
+    runs-on: macos-11
     strategy:
       matrix:
-        qt-ver: [5.15.1]
+        qt-ver: [5.15.2]
         qt-arch-install: [clang_64]
         clang-arch: [x64]
     env:
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 86cbbf81e..89c0fa643 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -24,7 +24,7 @@ jobs:
     # 矩阵配置 https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_idstrategymatrix
     strategy:
       matrix:
-        qt-ver: [5.15.1]
+        qt-ver: [5.15.2]
         qt-arch: [win64_msvc2019_64, win32_msvc2019]
         # 配置qt-arch的额外设置msvc-arch，qt-arch-install
         include:
diff --git a/QtScrcpy/QtScrcpyCore b/QtScrcpy/QtScrcpyCore
index 9b81a312a..0ed6236e0 160000
--- a/QtScrcpy/QtScrcpyCore
+++ b/QtScrcpy/QtScrcpyCore
@@ -1 +1 @@
-Subproject commit 9b81a312ad2e8157c48dc042e973a81702357509
+Subproject commit 0ed6236e0a43cf27baef51dab7a64cb36fd068c0
diff --git a/QtScrcpy/main.cpp b/QtScrcpy/main.cpp
index 629e08bdb..a24ba60b4 100644
--- a/QtScrcpy/main.cpp
+++ b/QtScrcpy/main.cpp
@@ -113,6 +113,9 @@ int main(int argc, char *argv[])
             "following address:");
     qInfo() << QString("QtScrcpy %1 <https://github.com/barry-ran/QtScrcpy>").arg(QCoreApplication::applicationVersion());
 
+    qInfo() << QObject::tr("If you need more professional screen projection control software, you can try the following software:");
+    qInfo() << QString(QObject::tr("QuickMirror") + " <https://lrbnfell4p.feishu.cn/docx/QRMhd9nImorAGgxVLlmczxSdnYf>");
+
     int ret = a.exec();
     delete g_mainDlg;
 
diff --git a/QtScrcpy/res/i18n/en_US.qm b/QtScrcpy/res/i18n/en_US.qm
index 854e80499..b73a8391d 100644
Binary files a/QtScrcpy/res/i18n/en_US.qm and b/QtScrcpy/res/i18n/en_US.qm differ
diff --git a/QtScrcpy/res/i18n/en_US.ts b/QtScrcpy/res/i18n/en_US.ts
index 626a7607c..5a5dcdd98 100644
--- a/QtScrcpy/res/i18n/en_US.ts
+++ b/QtScrcpy/res/i18n/en_US.ts
@@ -38,6 +38,14 @@
         <source>This software is completely open source and free. Use it at your own risk. You can download it at the following address:</source>
         <translation>This software is completely open source and free. Use it at your own risk. You can download it at the following address:</translation>
     </message>
+    <message>
+        <source>If you need more professional screen projection control software, you can try the following software:</source>
+        <translation>If you need more professional screen projection control software, you can try the following software:</translation>
+    </message>
+    <message>
+        <source>QuickMirror</source>
+        <translation>QuickMirror</translation>
+    </message>
 </context>
 <context>
     <name>ToolForm</name>
diff --git a/QtScrcpy/res/i18n/zh_CN.qm b/QtScrcpy/res/i18n/zh_CN.qm
index a505d6d00..3664aea87 100644
Binary files a/QtScrcpy/res/i18n/zh_CN.qm and b/QtScrcpy/res/i18n/zh_CN.qm differ
diff --git a/QtScrcpy/res/i18n/zh_CN.ts b/QtScrcpy/res/i18n/zh_CN.ts
index 093c35d75..6a71c1b6a 100644
--- a/QtScrcpy/res/i18n/zh_CN.ts
+++ b/QtScrcpy/res/i18n/zh_CN.ts
@@ -38,6 +38,14 @@
         <source>This software is completely open source and free. Use it at your own risk. You can download it at the following address:</source>
         <translation>本软件完全开源免费，作者不对使用该软件产生的一切后果负责。你可以在以下地址下载：</translation>
     </message>
+    <message>
+        <source>If you need more professional screen projection control software, you can try the following software:</source>
+        <translation>如果你需要更加专业的投屏控制软件，可以尝试作者开发的商业版：</translation>
+    </message>
+    <message>
+        <source>QuickMirror</source>
+        <translation>极限投屏</translation>
+    </message>
 </context>
 <context>
     <name>ToolForm</name>
diff --git a/QtScrcpy/ui/dialog.cpp b/QtScrcpy/ui/dialog.cpp
index abc143f8d..756837b93 100644
--- a/QtScrcpy/ui/dialog.cpp
+++ b/QtScrcpy/ui/dialog.cpp
@@ -2,6 +2,7 @@
 #include <QFile>
 #include <QFileDialog>
 #include <QKeyEvent>
+#include <QRandomGenerator>
 #include <QTime>
 #include <QTimer>
 
@@ -272,10 +273,13 @@ void Dialog::slotActivated(QSystemTrayIcon::ActivationReason reason)
 void Dialog::closeEvent(QCloseEvent *event)
 {
     this->hide();
-    m_hideIcon->showMessage(tr("Notice"),
-                            tr("Hidden here!"),
-                            QSystemTrayIcon::Information,
-                            3000);
+    if (!Config::getInstance().getTrayMessageShown()) {
+        Config::getInstance().setTrayMessageShown(true);
+        m_hideIcon->showMessage(tr("Notice"),
+                                tr("Hidden here!"),
+                                QSystemTrayIcon::Information,
+                                3000);
+    }
     event->ignore();
 }
 
@@ -317,6 +321,7 @@ void Dialog::on_startServerBtn_clicked()
     params.logLevel = Config::getInstance().getLogLevel();
     params.codecOptions = Config::getInstance().getCodecOptions();
     params.codecName = Config::getInstance().getCodecName();
+    params.scid = QRandomGenerator::global()->bounded(1, 10000) & 0x7FFFFFFF;
 
     qsc::IDeviceManage::getInstance().connectDevice(params);
 }
@@ -454,8 +459,10 @@ void Dialog::onDeviceConnected(bool success, const QString &serial, const QStrin
         videoForm->staysOnTop();
     }
 
+#ifndef Q_OS_WIN32
     // must be show before updateShowSize
     videoForm->show();
+#endif
     QString name = Config::getInstance().getNickName(serial);
     if (name.isEmpty()) {
         name = Config::getInstance().getTitle();
@@ -473,6 +480,11 @@ void Dialog::onDeviceConnected(bool success, const QString &serial, const QStrin
         videoForm->setGeometry(rc);
     }
 
+#ifdef Q_OS_WIN32
+    // windows是show太早可以看到resize的过程
+    QTimer::singleShot(200, videoForm, [videoForm](){videoForm->show();});
+#endif
+
     GroupController::instance().addDevice(serial);
 }
 
diff --git a/QtScrcpy/ui/videoform.cpp b/QtScrcpy/ui/videoform.cpp
index 64772c78f..bbed173aa 100644
--- a/QtScrcpy/ui/videoform.cpp
+++ b/QtScrcpy/ui/videoform.cpp
@@ -513,6 +513,9 @@ void VideoForm::switchFullScreen()
 
 bool VideoForm::isHost()
 {
+    if (!m_toolForm) {
+        return false;
+    }
     return m_toolForm->isHost();
 }
 
@@ -719,7 +722,9 @@ void VideoForm::showEvent(QShowEvent *event)
 {
     Q_UNUSED(event)
     if (!isFullScreen()) {
-        showToolForm();
+        QTimer::singleShot(500, this, [this](){
+            showToolForm();
+        });
     }
 }
 
diff --git a/QtScrcpy/util/config.cpp b/QtScrcpy/util/config.cpp
index 49eeb2a08..b75f0f79c 100644
--- a/QtScrcpy/util/config.cpp
+++ b/QtScrcpy/util/config.cpp
@@ -18,7 +18,7 @@
 #define COMMON_PUSHFILE_DEF "/sdcard/"
 
 #define COMMON_SERVER_VERSION_KEY "ServerVersion"
-#define COMMON_SERVER_VERSION_DEF "1.24"
+#define COMMON_SERVER_VERSION_DEF "2.1.1"
 
 #define COMMON_SERVER_PATH_KEY "ServerPath"
 #define COMMON_SERVER_PATH_DEF "/data/local/tmp/scrcpy-server.jar"
@@ -93,6 +93,9 @@
 #define COMMON_AUTO_UPDATE_DEVICE_KEY "AutoUpdateDevice"
 #define COMMON_AUTO_UPDATE_DEVICE_DEF true
 
+#define COMMON_TRAY_MESSAGE_SHOWN_KEY "TrayMessageShown"
+#define COMMON_TRAY_MESSAGE_SHOWN_DEF false
+
 // device config
 #define SERIAL_WINDOW_RECT_KEY_X "WindowRectX"
 #define SERIAL_WINDOW_RECT_KEY_Y "WindowRectY"
@@ -187,6 +190,23 @@ UserBootConfig Config::getUserBootConfig()
     return config;
 }
 
+void Config::setTrayMessageShown(bool shown)
+{
+    m_userData->beginGroup(GROUP_COMMON);
+    m_userData->setValue(COMMON_TRAY_MESSAGE_SHOWN_KEY, shown);
+    m_userData->endGroup();
+    m_userData->sync();
+}
+
+bool Config::getTrayMessageShown()
+{
+    bool shown;
+    m_userData->beginGroup(GROUP_COMMON);
+    shown = m_userData->value(COMMON_TRAY_MESSAGE_SHOWN_KEY, COMMON_TRAY_MESSAGE_SHOWN_DEF).toBool();
+    m_userData->endGroup();
+    return shown;
+}
+
 void Config::setRect(const QString &serial, const QRect &rc)
 {
     m_userData->beginGroup(serial);
diff --git a/QtScrcpy/util/config.h b/QtScrcpy/util/config.h
index 137e3755d..1f551265f 100644
--- a/QtScrcpy/util/config.h
+++ b/QtScrcpy/util/config.h
@@ -50,6 +50,8 @@ class Config : public QObject
     // user data:common
     void setUserBootConfig(const UserBootConfig &config);
     UserBootConfig getUserBootConfig();
+    void setTrayMessageShown(bool shown);
+    bool getTrayMessageShown();
 
     // user data:device
     void setNickName(const QString &serial, const QString &name);
diff --git a/README_zh.md b/README_zh.md
index 79bae22e1..536519abc 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -30,6 +30,24 @@ QtScrcpy 可以通过 USB / 网络连接Android设备，并进行显示和控制
 
 ![linux](screenshot/linux-zh.png)
 
+## 作者开发了更加专业的投屏软件`极限投屏`
+极限投屏功能&特点：
+- 设备投屏&控制：批量投屏、单个控制、批量控制
+- 分组管理
+- wifi投屏/OTG投屏
+- adb shell快捷指令
+- 文件传输、apk安装
+- 投屏数量多：在OTG投屏模式，设置分辨率和流畅度为低的情况下，单台电脑可以同时管理500+台手机
+- 低延迟：usb投屏1080p延迟在30ms以内，在相同分辨率流畅度情况下，比市面上所有投屏软件延迟都低
+- cpu占用率低：纯C++开发，高性能GPU视频渲染
+- 高分辨率：可调节，最大支持安卓终端的原生分辨率
+- 完美中文输入：支持闲鱼app，支持三星手机
+- 免费版最多投屏20台，功能无限制(除了自动重新投屏)
+- 极限投屏使用教程：https://lrbnfell4p.feishu.cn/docx/QRMhd9nImorAGgxVLlmczxSdnYf
+- 极限投屏qq交流群：822464342
+- 极限投屏界面预览：
+![quickmirror](docs/image/quickmirror.png)
+
 ## 自定义按键映射
 可以根据需要，自己编写脚本将键盘按键映射为手机的触摸点击，编写规则在[这里](docs/KeyMapDes_zh.md)。
 
@@ -48,7 +66,7 @@ QtScrcpy 可以通过 USB / 网络连接Android设备，并进行显示和控制
 - 再次按~键切换为正常控制模式
 - （对于和平精英等游戏）若想使用方向盘控制载具，记得在载具设置中设置为单摇杆模式
 
-## 群控
+## 批量操作
 你可以同时控制所有的手机
 
 ![gc](docs/image/group-control.gif)
@@ -176,7 +194,7 @@ Mac OS 平台，你可以直接使用我编译好的可执行程序:
 - 屏幕录制
 - 截图
 - 无线连接
-- 多设备连接与群控
+- 多设备连接与批量操作
 - 全屏显示
 - 窗口置顶
 - 安装 apk：拖拽apk到显示窗口即可安装
diff --git a/config/config.ini b/config/config.ini
index 87949f4d1..df5b23583 100644
--- a/config/config.ini
+++ b/config/config.ini
@@ -10,7 +10,7 @@ RenderExpiredFrames=0
 # 视频解码方式：-1 自动，0 软解，1 dx硬解，2 opengl硬解
 UseDesktopOpenGL=-1
 # scrcpy-server的版本号（不要修改）
-ServerVersion=1.24
+ServerVersion=2.1.1
 # scrcpy-server推送到安卓设备的路径
 ServerPath=/data/local/tmp/scrcpy-server.jar
 # 自定义adb路径，例如D:/android/tools/adb.exe
diff --git a/docs/image/quickmirror.png b/docs/image/quickmirror.png
new file mode 100644
index 000000000..2e5b5636d
Binary files /dev/null and b/docs/image/quickmirror.png differ