It snowed in Zhengzhou. It snowed heavily on February 28, 2011, but the weather forecast did not predict snow. Was it artificial snowfall?

It’s not artificial snowfall. God often doesn’t check the weather forecast. That’s it.

There is no difference between artificial snowfall and artificial rainfall. You use cannons or rocket launchers to put some catalysts such as silver iodide (actually Provide condensation nuclei) into the clouds, but in fact the effect so far is not very big, sometimes it will have some effect, but no one can tell whether it is artificial rainfall or it will rain naturally, or it will rain so much in the first place, because The weather forecast itself is inaccurate!