Question: Jan Julius Lodewijk Duyvendak translated The Book of Lord Shang which is attributed to which major Qin reformer?
Sentence (from "London Youlan Qin Society"): Of the three major qin societies of the West (the other two being the North American Guqin Association and the New York Qin Society), this society was the most informal but still the most active in terms of regular events and yajis.
Relevant evidence: No