Before we start
* Setup OpenVPN server
https://www.digitalocean.com/community/tutorials/how-to-set-up-and-configure-an-openvpn-server-on-ubuntu-20-04
* Setup Shadowsocks server
https://thematrix.dev/setup-go-shadowsocks-on-ubuntu/
Configure client side
Open the client .ovpn file.
Add this line to use SOCKS5 proxy on localhost port 1080.
socks-proxy 127.0.0.1 1080
Add this line to skip