Who is Mr. Zhu Zaiyu? I guess most of you dont know him. I barely knew him when a professor once mentioned him in college. The teacher told us he was a noble prince of the Ming Dynasty, but his greatest achievements were in technology and the arts. The name has been sleeping in my memory until recently, when I found a brief account of his story at:

http://www.toutiao.com/a6467095916661703182/.