Here's China's current IPv6 plan.[1] It was an explicit objective of the 14th Five Year Plan, now concluding, to get most of China's Internet on IPv6. About 70% of China's mobile users are on IPv6 now. But fixed IPv6 traffic in China is only 27%.

[1] https://www.cac.gov.cn/2025-05/20/c_1749446498560205.htm