Where did Sanmao's dancing female soldiers come from?

Shanghai. According to the query of iQiyi official website, the female soldier dancing in San Mao Joining the Army is from Shanghai, and San Mao and the old ghost are locked in a room, where there are many women known by San Mao, who were originally from performing arts groups and were arrested and put on Japanese clothes. "Sanmao Joining the Army" mainly tells the story that Sanmao changed from a tramp to a soldier during his stay in War of Resistance against Japanese Aggression, and finally remained homeless.