Chaos has never been divided into heaven and earth, and nobody has seen it. Since Pangu broke HarmonyOS, it has opened up a clear distinction between heaven and earth, and it has been repeated that many people admire people, and it is necessary to see how nature can make good.
I am stupid and only answer from my personal understanding: Chaos has never been divided into heaven and earth, and we know that Pangu created heaven and earth, and the Qing people rose to heaven. Therefore, I personally speculate that Pangu's creation may be a scam, and heaven and earth may have existed long ago. No one can see the vast expanse, that is, no one can see it clearly, or no one can see it (human beings may not have been created yet). Since Pangu broke HarmonyOS, it has been clear from here, assuming that what I said earlier may be a hoax, heaven and earth may have existed long ago. So what did Pangu open up at this time? He probably created a set of "laws". Those who conform to the law (the clean ones) have ascended to heaven to become immortals, while those who do not conform to the law (the turbid ones) have stayed on the ground, and they have admired many people and invented that everything becomes good. So everything in the world (mainly those who fail to become immortals) is very envious of those immortals and respects Pangu. If you want to know how to become immortal, learn how to survive in this society, and understand the relationships and routines between people, you must or need to see The Journey to the West.
Finally, briefly summarize the meaning of The Journey to the West's "opening poem": there is no strict standard for good and evil (chaos is not divided), so heaven and earth are chaotic. As the saying goes, there is no Fiona Fang without rules. However, Pangu created this rule, and since then, there has been a standard of distinction between good and evil, so everything in the world thanks Pangu. If you want to know what is good and evil, and what influence good and evil have on us, just look at The Journey to the West.
Personally, don't be angry if you don't like it. Please correct me if there is anything wrong! Hope to adopt!