Property in always funny, you rarely know who wants/must sell and buyers are rare and have options. Sellers control most of the market, for now.
Thinking about all this, I almost feel like staying in HK and being miserable for the rest of my life, like most Hongkongers.
You'll find that your money goes a lot further outside of HK and it makes the idea of immigrating elsewhere attractive. And HK people generally have the work ethic needed to succeed in overseas jobs, just add a bit of decision making and confidence and you'd do very well. There are plenty of cities in the US that are extremely wealthy and practically 100% Asian.
Good luck with trying to get a 3.5-4% yield on a walk-up residential property any time soon unless you are convinced there is going to be a substantial downwards price shift in properties in the foreseeable future.