Traditional Culture Encyclopedia - Weather forecast - Why doesn't it snow in Dongguan, Guangdong?

Why doesn't it snow in Dongguan, Guangdong?

The 0-degree isotherm in winter in China is the Qinling-Huaihe line. It must snow below 0, and there is enough water vapor. Dongguan is located near the Tropic of Cancer (23 ′ 26 ′ n) and is in the subtropical zone. It will be cold in winter due to the cold air from Siberia, but it won't snow. Think about it, if it really snows in Dongguan, how can people with higher latitudes live? Everything is connected with reality, but daydreaming is not enough. ...

Ps: I study geography. ..