China is quietly pushing ahead with massive 50,000Mbps broadband rollout to leapfrog rest of the world on internet speeds

This is generally referred to as 50Gpbs. It's impressive, but there's no need to use inappropriate scales.

That's "useful" when you can effectively only use it for Baidu, rednote, TikTok (the local version that's isolated from the rest of the world) and WeChat