Is Dandong the most suitable place for the aged in Northeast China?

I think Dandong is the most suitable place for the aged in Northeast China. Winter is not very cold, summer is not very hot, and the wind is not strong. The water quality is good. My chemistry teacher in high school told us that the ph value of water in Dandong is very suitable for people to drink, and the people here are particularly human. Mountain products has all kinds of seafood, which can be said to be a rare place to live!