When did the winter ice in Liaoning open?

The annual thaw in Liaoning is after mid-March. In the northeast, the spirit of the sun turned upward, the temperature rose, and the frozen soil began to thaw.

When the frozen soil thaws 10 cm, garlic can be planted and spring wheat can be sown. When the frozen soil is thawed by 30 cm, you can "plant melons and beans" in time, and the solar terms wait for no one. Frozen soil refers to all kinds of rocks and soils containing ice below zero degrees Celsius. Generally, it can be divided into short-term frozen soil (hours/day to half a month)/seasonal frozen soil (half a month to several months) and permafrost (also known as permafrost, which refers to permafrost that lasts for two years or more).