After 25 months, If they can prove that they lived in the property for two of the past five years, they can sell it as an owner-occupied residence.

I live around Huntsville, the epicenter of northern Alabama.

I wouldn't start investing in the US if you have no plans on coming back from living in China.

Where do you live, and where are your units? 

So you need to live there.

I'm in the greater Boston area and I wasn't able to fully live for free but I was spending about $700 on my unit.

I am 24 y/o and live in Fairfield County, CT looking to buy my first property...likely house hacking a multi-family.

Unless you want to live in that district, I would avoid any and all purchases in an area like that.

I wanted to invest where I wanted to live and I am also from Elgin so am constantly headed further nw. 

I have heard good things about Ohio, Indiana, etc.5 - Due to high interest rates flipping has become highly risky and most businesses have dried up.6 - Co-living and Assisted living seems to be popular right now.So - really depends on your market, your strategy, and your timeline.