acknowledged children, including her half-brother OeiTjongHauw. The two Oei sisters – as daughters of Oei's senior wife – lived with their father and were
World War II. TjongHauw died suddenly in 1950. After TjongHauw died, OeiTjong Tjay led OTHC. He was the youngest son of Oei Tiong Ham and Oei Ing Swie,
Headquarters of Kian Gwan (the Oei Tiong Ham Concern)(1930) Villa OeiTjongHauw, son of Oei Tiong Ham (1931) Villa Han Tiauw Tjong (1932) Villa Tan Liok Tiauw