In winter in Xiamen, it is not the temperature that is cold. It is difficult to see the lowest temperature below 3 or 4 degrees in the urban area of the island. Even at this temperature, people will hide under the covers in the middle of the night or early morning, and it is rare to have such a low temperature during the day. The cold in Xiamen is mainly due to the high humidity, low temperature and high humidity, so the biting freezing is even worse than the minus ten degrees in the north.