In short, this rice/grain producing area was flooded and wiped out. Sad.
https://youtu.be/XBF_-yeLA2kHere is Heilongjiang province in the video. The Amur river and Russia is the northern border.

I think Harbin is the capital city. I think this is the so called Russian city because of the Russian speaking people.
China's grain has been devastated by the flood/Millions of People's Rice Bowls are in danger
China Insights
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The flooded area in the video is Wuchang County in Heilongjiang Province. It's located in the northeastern part of China and is known as the "grain warehouse in Northeast China," a region that is well known nationwide.
Peasants have suffered great damage. Homes built by generations are destroyed, and crops are flooded with no harvest. Look, the floodwaters have inundated the rice paddies. One can only see a sea of water with the tip of the rice crops. Now it’s supposed to be the flowering period. No rice will grow without flowers. In about two months it will be harvesting time, but now with the big flood, the harvest is gone.