To item 1, compile a list is relatively easy. Each major Zhong Guo people concentrated city has a lot of paper and magazine ads with PPs and contact info. We could form an association nation wide. There must be some organizations locally but not sure nationally for Zhong Guo people. I will join the association if it is formed.
For item 2, JY101 trespassed to the commercial territory. So it became an ad. I remembered that there is an ID called for people to join to do things together to become a REIT. "a real holding company, that may control 2000+ units" involves real money. It will be tough to form. People will give the control to the board and executives of this holding company instead of being a small landlord and feel complete in control of everything. I think people reading this forum combined have more than 20,000 units or more. However, I will support you and will put in portion of my assets to that.
