Keye Luke, who played Mr Chang, played Kato in the old Green Hornet movie serials.
In this episode, Bruce Lee is a Chinese actor playing a Japanese character and Mako is a Japanese actor playing a Chinese character.
Keye Luke would later provide the voice for the villain Mr. Han (Kien Shih) in American prints of Bruce Lee's most iconic film, Enter the Dragon (1973).
The Golden Lotus Cafe is a redress of the set for Brannigan's Pub from the episode "Eat, Drink And Be Dead."
The exterior street sets were used on a "Lost in Space" episode ("The Galaxy Gift," Season 2, Episode 30) where aliens trick Dr. Smith and Penny into thinking they've been returned to San Francisco's Chinatown.