Install Deepin Desktop Environment (DDE)
sudo add-apt-repository ppa:leaeasy/dde
sudo apt-get update
sudo apt install dde
The following is for experiment only (not recommended by the PPA creator).
sudo apt install dde deepin-gtk-theme dde-control-center-plugin-notify dde-control-center-plugin-weather redshift libfprint0 dnsmasq cgroup-tools imwheel libpam-fprintd fprintd network-manager-l2tp network-manager-openconnect network-manager-openvpn network-manager-vpnc minicom deepin-calculator dde-file-manager
Install RecordMyDesktop (Optional)
sudo apt install gtk-recordmydesktop
* when "Window Effect" is disabled, "Deepin Screen Recorder" and "Multitasking View" will be disabled too.
Set Font of the system (Optional)
Set Font to "Ubuntu" and "Ubuntu Mono" and set font size larger when necessary.
Disable Window Effect Mode (Optional)
When you find booting to desktop taking a longer time and playing video files lagging, you need to consider to disable the Window effect as your display card is not strong enough.
The following optional settings are for Chinese only. Ubuntu default ibus is not compatible with Deepin DDE and you need to use fcitx instead.:
If you are using English version Ubuntu, you are required to install the Traditional Chinese fonts or Simplified Chinese fonts.
Traditional Chinese
sudo apt install language-pack-gnome-zh-hant-base language-pack-gnome-zh-hant
or
Simplified Chinese
sudo apt install language-pack-gnome-zh-hans-base language-pack-gnome-zh-hans
Install Cangjie Quick Input Method (Optional)
sudo apt install fcitx fcitx-table-quick-classic fcitx-config-gtk
Install Cantonese Input Method (Optional)
sudo apt install fcitx fcitx-table-cantonese fcitx-config-gtk
Install Cangjie 3rd Generation Input Method (Optional)
sudo apt install fcitx fcitx-table-cangjie3 fcitx-config-gtk
Install Cangjie 5th Generation Input Method (Optional)
sudo apt install fcitx fcitx-table-cangjie5 fcitx-config-gtk
After installing desired Chinese Input Method, go to "Language Support" to set from "ibus" to "fcitx" and make sure to install missing packages when asked in launching "Language Support". To toggle the Input Method by pressing "Ctrl+Space" and set your Input Method as default when necessary.
You can even switch between Gnome and Deepin desktop environment when you are going to login. If you want to delete the Deepin DDE forever, you can run the following commands :
sudo apt remove dde
or
sudo apt remove dde dde* deepin* deepin-gtk-theme dde-control-center-plugin-notify dde-control-center-plugin-weather redshift libfprint0 dnsmasq cgroup-tools imwheel libpam-fprintd fprintd network-manager-l2tp network-manager-openconnect network-manager-openvpn network-manager-vpnc minicom deepin-calculator dde-file-manager
sudo apt autoremove
sudo apt update
Reference
How to Install Deepin Desktop Environment on Ubuntu 18.04
That's all! See you.