Hi, friends! Let me tell you something about the months and seasons. In Harbin, spring is from March to May. Summer is from June to August. Autumn is short. Winter is long in Harbin. It's from November to February the next year.
But in Guangzhou, summer is very long. It's from April to October. Spring and autumn are very short. March is spring and November is autumn. Winter is from December to February the next year. And it's not too cold in winter. If you are planning a trip, look at the map first and remember that place where you're going may be not in the same season.