A Qing era Baimiao (fine line) drawing by Yu Chong

I have this and another similar drawing in my collection by Yu Chong. I have found some information about him being in museums in China, but there seems little information about his life and works still around. This is a drawing of a lady holding a sheng (an instrument) and a phoenix, framed in the early 20th century by a high end San Fransico Gallery, and created in the mid to late Qing Era in China. This is an example of Baimaio drawing.