Taoism is anti-authoritarian in the extreme. Buddhism is significantly more neutral on the subject but is definitely aligned closely with personal liberation and at minimum it does not make special exceptions for authorities. There are many famous incidents involving Bodhidharma trying to disillusion authority figures about their own authority.
So I disagree with you that there are no Chinese philosophical traditions that are anti-authoritarian or that promote individual liberty. There are, but they are losing right now.