But it's highly likely that Xu Lin won't return to his hometown in the future; he'll most likely settle down in Jiangdu. And settling down in Jiangdu means buying a house, which will cost at least ten million. Houses that cost just a few million are in relatively poor areas.
Ms. Ren has thought about it: if she buys a house for her son, she'll have to pay in full. Otherwise, what's she going to do, let her son carry a mortgage for decades? If he has a mortgage, won't he have to pinch and scrape to make ends meet? Even going out to eat occasionally would mean checking his wallet, and that wouldn't be acceptable.