What is the most useful free VPN in China now?

As of October 2023, ProtonVPN is often considered one of the most useful free VPNs for users in China due to its robust security features and reliable performance. However, it's important to note that free versions may have limitations in speed and data usage. Other options like Windscribe also offer free tiers, but they might not consistently bypass the Great Firewall. Users should be cautious and verify current performance, as the effectiveness of VPNs in China can change frequently.