He is noted for being China's representative at the Tokyo War Crimes Tribunal.

At the age of 12, Ju-ao was admitted into a school on the site of what is now Tsinghua University, moving from Nanchang to Beijing in pursuit of a good education.

[1] After spending a year traveling around Europe, Mei returned to China in 1929.

[3] During the period of 1946–48, Mei was the Chinese judicial delegate to the International Military Tribunal for the Far East.

He supported the Communists led by Mao Zedong and served as a member of the Chinese People's Political Consultative Conference, a special advisor to the Ministry of Foreign Affairs, executive director of the Chinese People's Institute of Foreign Affairs, and a member of the Chinese branch of the World Peace Council.