I found another vintage lady watch movement, a Guangzhou KBC-2 movement. It looks similar to the KLC Taishan movement(on the right), but not exactly the same. It is a 17 jewels 21600 bph movement. I think someone should try to collect these for historical evidence before they are lost. Some Guangzhou lady watches also used Seagull ST6 movements.
According to my experience, this KBC-2, together with XIHU and Zhongshan SN4 lady watches movements are quite rare.