It was during the commune Great Leap Forward. Prior to this, Mao Zedong went to Moscow to attend an international conference on * * * *. At the meeting, the Soviet Union put forward the goal of catching up with and surpassing the United States in the five-year plan. Influenced by the Soviet Union, Mao Zedong did not seriously consider the domestic situation, and also proposed to surpass Britain and catch up with the United States in steelmaking. (At that time, China had just been founded and its economy was backward, while the Soviet Union was second only to the United States, ranking first in Europe and second in the world. At that time, there was a steel-making craze all over the country. At that time, the output of iron ore was low, and people were called to donate iron. Pots, pots, shovels and iron were donated, so that production was not carried out and production tools were destroyed. At that time, the national economy was declining ~ ~ ~