What month is spring in Anshan, Liaoning?

Director Xu Jingwen of Anshan Meteorological Observatory introduced that the four seasons in Anshan have distinct characteristics. According to the general division of seasons, every three months are designated as 1 season. According to this calculation, Anshan will enter the summer from June 1. However, according to the more scientific and detailed phenological standard (5 days 1 climate), the average temperature of 10℃ is the boundary temperature between cold and warm, and 22℃ is the boundary temperature between cold and warm. Winter is below 10℃, spring and autumn are between 10℃ and 22℃, and summer is above 22℃. Because this standard divides seasons by specific temperature, the length of the four seasons in Anshan is different.

Spring in Anshan is generally 56 days, from April 20th to June 6th.