yunjian
A yunjian is an ornate traditional Chinese collar.
It translates to cloud collar; its namesake derives from its dulating trim, of which is often cloud-like in design. It is sometimes also made to resemble feathers. The yunjian also often features elaborate print designs, and sometimes features several tassels.
The collar was popular during the Ming and Qing dynasties, and was mostly used during weddings and banquets.