Thought it is good to share this obscure incident that happened in Daqing, China in 1981.
What is known about the massacre is that Zhang armed himself with two revolvers and first killed his five children, his mother, and three of his brothers. He then committed suicide by shooting himself in the head. The apparent motive for the shooting was because Zhang had an argument with one of his brothers the day prior to the massacre.
Google about "Zhang Yiho" shows a number of results, many from Quora questions. All of the questions were replied by a Pedro Rosemark, who tells the incident. Maybe is Pedro Rosemark Chinese? I tried to search the incident but my Chinese is terrible. Other than the Quora answers, the two other sources i found is a findagrave and a mass murder fandom wikia page about Zhang Yiho.
Zhang Yiho - Mass murder fandom wikia
Findagrave (Created by a pedro, so i suspect it is Pedro Rosemark.)
Any Chinese here to verify this incident?