The latter split! However, "Black Duck" became famous because in 1992, the famous musician Gu Jianfen led the "92 Chinese Style" group to perform in Hong Kong. This was also the first performance in mainland China in Hong Kong! After the split, Gu Jianfen issued a written statement, only recognizing the "Black Duck" group represented by Li Rong. Other heavyweights in the music industry such as Yan Su, Xu Peidong, Sanbao and others also made written statements on Li Rong's behalf! But Xu Xiuxia also found the signature certificates of Wen Zhongjia and Li Lu!

As for the constant changes you mentioned, it should be the Xu Xiuxia group:

In 2004, Xu Xiuxia claimed that her Black Duck had been registered as a trademark, saying that Li Rong had been using hers for a long time The sound infringed on the rights of sound and performance, so the Black Duck Group with three members including Li Rong sued the Beijing Chaoyang District Court.

In 2006, Xu Xiuxia once again adjusted her team and replaced Yang Man in the vocal department with Ni Yafeng.

In 2010, Xu Xiuxia replaced the first and second voices.

Keep changing, keep changing! Never stops!