When will Shanghai return to Nantian?

Returning to Nantian in Shanghai is usually the season of Spring Festival alternating from February to March, and usually ends in April.

South China belongs to a typical maritime subtropical monsoon climate. From March to April every year, the warm and humid air from the South China Sea meets the cold air from north to south, forming a stationary front, which makes the weather in South China changeable and very humid, with light rain or fog during the period. When "Returning to Nantian" appears, the air humidity is close to saturation, and the walls and even the ground will "get out of the water". The dense fog is the most distinctive appearance of "Returning to Nantian". Returning to Nantian often occurs in the season of alternating February and March, and generally ends in April. To get rid of this weather completely, it rains a lot in Mao Mao every year in Tomb-Sweeping Day after Tomb-Sweeping Day. Spring ploughing after the holiday is always like this, usually in April 15, and then you can get rid of this continuous weather.