This is an interesting story that I heard, the source of which I will not mention to protect the people involved.
There is an economics lecturer in a university, and we shall call him John. He is middle age, with adult kids. The kids had migrated over to Australia for reasons unknown to me, but he's still staying here in Singapore, earning a more than decent living working part time as a lecturer. The other part time work that he's doing is that of a land lord. He didn't say much, but it's reasonable to deduce that he is semi retired and had reached a certain degree of financial freedom so that he can quit his job and still maintain the same standard of living as before.
I'm not sure how many properties he had, but it should be more than 1 and that excludes the residential property that he's ......