According to HKFA 張蓉蓉 (即尤情), Cheung Yung Yung alias is Yau Ching (1).

Can anyone confirm and update?

According to the HKFA there are 2 Cheung Yung-Yung.
The Cheung Yung-Yung who made "Fury of a Tiger" in 1989 is another person.
Merged and "splitted".