52longhair used to publicly offer hairjob videos, but have stopped doing so after their site revamp.

Given the recent COVID-19 restrictions in China, it's likely that Wu (the site owner) can no longer easily find hookups for girls willing to have sex/hairjob with him, and more girls are selling their hair due to economic hardship.

Both Hair43 (http://www.hair43.com/changfa/) and Maitoufa (https://www.maitoufa.cn/) seem to have more activity, although most of the entries these days are haircuts rather than recurring long hair models.