You have to find Master Chong. He is usually around Ang Mo Kio
parks. He doesn't go to any specific park all, so it is quite hard
to find him. Got one time I saw him at Labrodar Park training his
students qigong. So, just hang around. Or if you want a specific
answer, you can try asking one of his students at :
http://www.sgwutan.com/
Alternatively, you can go down to Chua Chu Kang CC. He is teaching
hung gar there. Which day I don't know. What time I also don't
know. You can check the PA website for answers.