According to today's headline, the content of the mountain proverb is that the mountain can't cover the sun. No mountains, no flat land. It's easier to go up than down. If you don't shoot a tiger, you dare not go up the mountain. The mountain does not turn, but the road turns. The mountain height has its own passenger road, and the water depth has its own ferryman.
There is no mountain, no plain, a proverb, which means that there is no contrast in metaphor, and I don't know whether it is good or bad.