Liu is often wrongly cited as being the adopted son of Lau Cham, and adoptive brother of famed directors / actors Lau Kar-leung (Liu Chia-liang) and Lau Kar-wing (Liu Chia-Yung).
Często mylnie uważa się, że Liu jest jego adoptowanym synem i przybranym bratem Lau Kar-leunga (Liu Chia-Liang) i Lau Kar-winga (Liu Chia-Yung).