Andrew,
Most likely not popular. I just came back from Hong Kong and China. Apartments are so small and expensive, they can't afford the space & the mess especially in Hong Kong. The luxury apartment just hit a market high recently. It was HK$71,000 per square foot (US$9,160 per square foot per Yahoo currency converter). HK$4,000 per sq.ft. on 30+ years old apartments is regarded as bargain. Brand new ordinary apartments are around HK$10,000 per sq.ft. If people can afford more space, they would rather have a second bath or roomier rooms. People who can afford the excess space for a workshop probably won't have time or woodworking won't fit their life style.
If you look up the AAW Directory, there is no member from Hong Kong, Macau or China. There are only 2 members in Taiwan; one of them seems to be a manufacturer.
I have brought some small turnings to relatives as gifts. Woodturning as a hobby is something new to them. At first, they showed great interest. After my wife mentioned the shavings, dust, we changed conversation subject.
Properties in big cities in China have gone high rise, and price sky rocketed. You will see a lot of wood carving, but not turning.