Wu Zhi Zhai

this "Wu Zhi Zhai" actually refers to 五知齋琴譜 (Wuzhi Zhai Qinpu / Qin Tablature of the Five Knowledge Studio). 琴譜 (tablature—a form of musical notation indicating instrument fingering rather than musical pitches):
s/no. 53. 五知齋琴譜 (Wuzhi Zhai Qinpu / Qin Tablature of the Five Knowledge Studio)
compiled by: 徐琪 : Xu Qi; published: 1721
— source: https://en.wikipedia.org/wiki/Template:Qinpu