What do you mean by "all rivers run into the sea, with great tolerance, standing on the wall with perseverance"?

This is what Lin Zexu said. The metaphor of the sea in the first half of the sentence means that tolerance can make you great The second half of the sentence takes cliffs as a metaphor, saying that people can be invincible only if they don't have too much desire for foreign things. These two sentences inherited China's traditional thought of self-cultivation and abstinence, that is, what Laozi called "virtue is like a valley"-tolerance is a real virtue; He also said that "if you love too much, you will die if you hide too much"-paying too much attention to foreign things will inevitably lead to your own losses, and cherishing too much will inevitably lead to a lot of losses. Nevertheless, when people want nothing, they will still be satisfied with themselves.