Spiral rise: I believe you must know the screw! If you look at this kind of thing carefully, you will find its structure is very wonderful. It keeps climbing, but the road is tortuous, circling with nails. In other words, the development law of things is like a screw, which has an upward trend. At the same time, there are times when we stumble, just like the revolutionary road of our China * * * production party. In the process of continuous progress, he often has such problems and obstacles.

Wave-like progress: Its principle is like waves. The wave turns up, slaps on the shore, then retreats, and then another wave comes, comes and goes, repeatedly, which shows that it is repeated. You can consider it in connection with the ten-year Cultural Revolution. After the founding of New China, the economic development has achieved initial results. However, because of the ten-year Cultural Revolution, China's economy regressed and suddenly turned back to its early days. There seems to be a saying that ...' change back to before liberation overnight' is the truth. Or the reason why the waves behind the Yangtze River push the waves before. What's more, waves come in waves and have cycles. Dear, I don't know if you have learned the periodic table. In short, you can understand it as regularity. This law is strictly limited. )

How's it going? Do you understand a little?

Just understand, don't scold me if you don't understand! That's all I can understand ...

Zimu