A year back the party decreed a plan to have all Internet users on IPv6 by 2025, with a quarter of them already by the end of this year [0]. There was a test rollout back at the beginning of the summer [1]. I guess we might see a huge rollout before the end of the year to meet the deadline. There's been a slight rebound already [2][3].
[0] https://en.wikipedia.org/wiki/IPv6_deployment#China
[1] https://blog.cloudflare.com/ipv6-in-china/
[2] https://stats.labs.apnic.net/ipv6/AS9808
[3] http://www.worldipv6launch.org/apps/ipv6week/measurement/ima...