If we regard human beings as a whole, we have never paused, and society is constantly moving forward, with new progress and changes every day. In this case, there are various rules that can correspond to it, and people follow these rules to work and study, day after day.

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The original function of the waterwheel was to transport water, but the waterwheel in the city park got rid of this rule and stood quietly in the center of the pool, just like people immersed in their own world in the city.