 Kong-Chian was also associated with Koon-Teck's father-in-law, Seow Poh Leng, the two of them having been established businessmen and had served together as long-time members of the Singapore Chinese Chamber of Commerce, Chinese Association, Straits Settlements Association, Singapore Chinese Recreation Club, board of directors of the Singapore Chinese Girls' School, board of directors of the Overseas Chinese Banking Corporation Limited, founded earlier by Poh Leng, Rotary Club, Chinese Swimming Club, and the Garden Club, where Koon-Teck also served.Koon-Teck was more of a personal assistant than a legal advisor – Lee Rubber had its own solicitors.Initially Koon-Teck was occupied in attending to Lee Kong-Chian's war claims and buying land very cheaply at auctions – no one had much money at that time.