魏国王子牟，他的封地在中山，所以大家都称他中山公子牟。
Mou , the prince of Wei , received his feudatory in Zhongshan . So , he was called Zhongshan Prince Mou .
公孙龙有一天到魏公子牟的家去，请公子牟帮忙解开他心中的疑虑。
Gongsun Long paid a visit to Mou , prince of the State of Wei , and asked him to solve his bewilderment .
公子牟