What's the climate like in Qinhuangdao all year round? Can't southerners adapt there?

Don't worry, I have been studying and living in Qinhuangdao for 6 years, and the lowest temperature in winter is-10 degrees. And there is heating in the north, so it's not that cold. There are also dormitories in Zhejiang, Hunan and Hainan Island, which are also quite suitable. And I think southerners seem to be more frost-resistant than northerners! Many southerners wear less than us in winter, but they don't feel cold!