One reason to know the world is that as you get older, you have more knowledge and see more people and things. You will naturally know the truth of this world, of course not all, but at least you can know the truth of the world around you. This is a natural way. This seems to be a passive way to accept the truth of the world, which has a lot to do with the surrounding environment.
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If you want to know the truth of the world faster and better, you need to take the initiative, read thousands of books and take the Wan Li Road. This is difficult, but if you want to grow, you need to pay. You should read at least one book that has a deep understanding of yourself every year, and you can't just stay at home and go out for a walk.
To know how wonderful the outside world is, you can't just look at the scenery, but mainly understand the local culture and the outside world, which also makes you not limited to the current environment.
Knowing the world is not secular, and knowing the world is not influenced by the world. The small ones are hidden in the mountains, and the big ones are hidden in the city. With this kind of recluse's calm mentality, build a back garden for yourself in the secular world, so as to transcend the secular mentality and experience the infinite realm beyond the secular world.