The best in terms of reliability & price
LetsVPN is also good but it isn’t free cheaper than all the VPN’s that advertise on YouTube though.
Your corporate VPN or roaming plan of your original mobile service provider. They are legal, more reliable and free or cheap with your original mobile service. Also they are more secure, because some illegal free VPN services are actually monitored by Chinese police…
Is it from 王岐山？ I’m pretty sure it is less powerful than 老习VPN