copplation for debian10/Deepin20/UBUNTU20.04/LinuxMint20.1 etc. test for debian10
download qv2ray deb package.
unzip v2ray-core to ~/.config/qv2ray/vcore
click .desktop to launch qv2ray or use 'qv2ray' command line
qv2ray usage at https://github.com/Qv2ray/Qv2ray