He graduated from the electrical engineering department of the High Technical School of the Board of Communications in the Ching Dynasty and Wisconsin University, U.S.A., graduating with Master of Arts degree in electrical engineering.
Since his return from America, he successively served as dean of National Chiaotung University, professor of the Beijing (Peking) Government University, and of Beijing (Peking) Government Technical College, engineer in the Telephone Administrations of Wuhan, Beijing (Peking) and Tianjin (Tientsin). Chung Ao was an electrical engineer attached to the Chinese Navy, chief consulting engineer in China of U.S. International Telegraph and Telephone Company, director of the branch office of the Beijing (Peking)-Tianjin (Tientsin) Wireless Station, technical expert of the Ministry of Communications, sectional chief of the telegraph division of the same Ministry, director of the Telephone Administration of Tianjin (Tientsin) and of Beijing (Peking).
Mr. Chung served as a director of the International Telegraph Administration and director of the Telegraph Department of the Ministry of Communications, Nanjing (Nanking) in 1931. He was a member of Chinese Engineers' Association, Radio Engineers' Association and U.S. Electrical Engineers' Association. Since 1934 Chung Ao served as a manager of the Bank of Communications, Tianjin (Tientsin).