[1] In 1953, Wong went on an expedition trip led by G. de G. Sieveking, including Emily Sadka, where they found masonry in Malay fortifications and the remains of an ancient Chinese trading ship.

[2][3] He worked as a senior lecturer in history at the University of Singapore, the chairman of the Adult Education Board, and the director of the External Affairs Bureau of the People's Action Party.

Wong was a part of a five-man delegation led by then-Minister for Interior and Defense Goh Keng Swee that attended the 1966 U.N. General Assembly.

[11] On 16 February 1983, Wong committed suicide by hanging using a nylon cord in his bathroom after having heard a loud noise from his neighbour's house.

According to his wife, Lilli Wong, and his psychiatrist, Ho Eng Siong, he had been suffering from depression and entered a panicked reaction after the sudden loud noise.