The tag alias #56475 gao-expression_x -> gao-lukchup has been approved.
Reason: More used name, see https://e621.net/artists/29239. The only place they use the old name anymore is Picarto.
EDIT: The tag alias gao-expression_x -> gao-lukchup (forum #326778) has been approved by @bitWolfy.
Updated by auto moderator