What was the weather like in Shenzhen last winter? It is so cold now this year. Is it colder in winter?

Winter in Shenzhen is like this! This year, I still feel too cold. Now the lowest temperature is 17 degrees, which is much better than that in the north. The coldest time is 7 or 8 degrees, mainly because there is no heating at home, so I feel very cold, but the time is not long. After the new year, the temperature will rise in February and March of the lunar calendar.