If northerners want to settle in the south, which city would you recommend?

If northerners want to settle in the south, then I recommend Nanjing, Suzhou, Wuxi, Shanghai, Hangzhou and Jiaxing, because Jiangsu, Zhejiang and Shanghai, the Yangtze River Delta region itself is relatively developed, with pleasant climate, many green plants and good environment. The smog is much lighter than in the north, and the air is not bad. Very suitable for settlement.