[7] As a young boy, Chong was taught Chinese martial arts by his uncle for self-defense.
[7] In 1965, Chong sailed to Japan to train under Mas Oyama, without informing either his wife or his father of his intentions.
[3] During one summer training, Chong attempted the 100-man kumite under Mas Oyama but stopped after fighting 30 opponents.
[11] Chong was responsible for training Inamullah Khan, pioneer of Kyokushin karate in Pakistan.
[12][13] In 1973, the kungfu film Ring of Fury was released starring Peter Chong, which had featured various locations around Singapore.
[14][15] In 1978, Chong expanded his karate school into a society, the Singapore Oyama Karate-do Kyokushinkaikan (SOKK).
[16] Under SOKK and SMAIA, he raised funds for various charities such as the National Kidney Foundation (NKF).
He was also in charge of the range where VSC personnel took part in their annual shooting test.