Well, I will mention an example, 天不言自高, 地不言自厚, which literally means the sky doesn’t say how high it is and the ground doesn’t say how deep it is. It’s usually used to remind people of keeping a humble attitude, rather than adopting a complacent one. I mean, when you see the high sky and deep ground, you realize the puny exisitence of human beings.
And you also realize that in this bigger world, there are always people, places and things that you could learn from and learn about, even if you climb to TOP 1 in one field or in several fields, since in life there are so many fields, and you could not be so sure that you are masters in all of them. So, the gist of this proverb is staying humble and keeping learning.