BUR #26043 is pending approval.
create implication duijin_ruqun -> ruqun
create implication ruqun -> hanfu
Since as per its own wiki page "Ruqun is the most basic type of Hanfu" then there should be an implication relationship between them.
Continuing with the same wiki page, it goes "Ruqun is divided into Qiyao ruqun, Gaoyao ruqun and Qixiong ruqun based on the waist height of the skirt. The collar style can be divided into Jiaoling ruqun and Duijin ruqun". First two tags are unpopulated, the third one has so many more posts than it's proposed parent I can't create the BUR thus I'm forced to remove it from this request, fourth one has only 4 posts so it must be skipped too.