Unfortunately, wireguard is blocked in China, doesn't work anymore through WG protocol..................I have tested Astrill/Torguard/VPNac woth their WG protocol...........confirmed by torguard staff........ damn..........
Wireguard is not designed to bypass blocks. It's sufficient blocking UDP (or strongly shaping outgoing UDP packets) to make Wireguard unusable, and that's more and more common practice on many mobile ISPs in every continent and country. Forget connections over stunnel and don't even fantasize about connections over SSH. There are also other important limitations and concerns, anyway we will make them all very clear when we offer Wireguard.
Please use OpenVPN as usual to bypass China blocks.
Kind regards