It looks more like some Beijing opera performers. Nevertheless, very interesting for a 1955 American movie. Although, LOL at the actors in yellowface.
Here is the part of the scene in 1975's Boxer Rebellion where Chi Kuan-Chum demos before the Empress Dowager:
And supposedly, the first time kung fu was featured on American TV was in 1955 on NBC's The Home Show, with Arlene Francis and Hugh Downs. Students of T.Y. Wong performed. (Source: Striking Distance: Bruce Lee and the Dawn of Martial Arts in America, by Charles Russo).