漁歌 (Yuge, or “Fisherman’s Song”)

漁歌 (Yuge) ("Fisherman's Song") : http://www.silkqin.com/02qnpu/09zysz/zy09yg.htm — later aka Ao Ai 欸乃
漁歌調 (Yuge Diao) ("Melody of the Fisherman's Song") : http://www.silkqin.com/02qnpu/09zysz/zy08ygd.htm

lyrics based on the poem Yu Weng ("An Old Fisherman") by 柳宗元 (Liu Zongyuan). Liu's lyrics set to a different melody for each. composer is probably unknown, see below.

the "Wu Zhi Zhai" named as composer actually refers to a 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