I have personally been to Kunming and Tianjin. I think Kunming is definitely weaker than Tianjin in terms of work pressure and competitiveness. After all, it is an underdeveloped area (except that most people in Kunming don't want to see the outside world, so they think Kunming is very good and strong. Well, many times I compare Kunming people to African aborigines. As far as living is concerned, Kunming is slightly better than Tianjin! Mountain cities have beautiful natural scenery and better air quality than Tianjin. And it won't be snowing like Tianjin in winter, just wear three clothes, and of course you don't need a fan in summer.