- Keng'er (1)
This qin is named Keng'er. It was made by the student of Choi Chang-sau, Yung Hak-chi, Hammond in 1994. This photo shows the front of Keng'er in Zhongni style.
- Keng'er (2)
This qin is named Keng'er. It was made by the student of Choi Chang-sau, Yung Hak-chi, Hammond in 1994. This photo shows the back of Keng'er in Zhongni style.
- Sum-yin (1)
This qin is named Sum-yin. It was made by the student of Choi Chang-sau, Yung Hak-chi, Hammond in 1995. This photo shows the front of Sum-yin in Zhongni style.
- Sum-yin (2)
This qin is named Sum-yin. It was made by the student of Choi Chang-sau, Yung Hak-chi, Hammond in 1995. This photo shows the back of Sum-yin in Zhongni style.
- Aixian (1)
This qin is named Aixian. It was made by the student of Choi Chang-sau, Yung Hak-chi, Hammond in 1995. This photo shows the front of Aixian in Fuxi style.
- Aixian (2)
This qin is named Aixian. It was made by the student of Choi Chang-sau, Yung Hak-chi, Hammond in 1995. This photo shows the back of Aixian in Fuxi style.