His concern was that he has to be physically present if the customer appeals, and he cannot afford that right now. 

However, since we are abroad, I feel quite limited as to what type of real estate investments we can do since I am physically located here in China.

You really have to physically be there to have a real idea of the house and the neighborhoods. picture or google earth can't give this to you. 

I'd want to dig deeper into the quality of the tenants (& leases) and the physical condition of the units.That said, the decision to do a deal or not only makes sense in the context of available opportunities.

If you want to buy physical property, you’ll need to decide on a market.Assemble a team: You may want to work with an agent when you get started.

Some people have eating habits that are repulsive and serious hygiene problems where many people don't take showers or baths for weeks and bad body odors tend to make me sick where I can't get their odor out of my system.

I, since I was young, had this bug and desire that I could not erase to study medicine.The analytical side of me says the opportunity cost monetarily, mentally, and physically to go through pre-med, med school, residency - it is ridiculous.

You would just not have a physical presence in that area obviously.

Realistically I can’t do my physically demanding job forever and I need to make some investments so I can slow down in the next 10 years and retire in hopefully 15.

I, since I was young, had this bug and desire that I could not erase to study medicine.The analytical side of me says the opportunity cost monetarily, mentally, and physically to go through pre-med, med school, residency - it is ridiculous.