One person spreads falsehood, and ten thousand people spread truth: falsehood is nothing. This is nothing, because there are many people in the legend, which makes people believe it.

2、

And one person guarding it, 10 thousand people can't force it to open: if one person holds the key, 10 thousand people can't open it. Describe the dangerous terrain, easy to defend but difficult to attack.

3、

A leaf can't see Mount Tai. Metaphor is blinded by small things at present, and we can't see the whole picture, mainstream and essence of things.

4、

One is happy, and the other is afraid: because. On the one hand, I am happy, on the other hand, I am afraid.