Why can the words "seeking holiness" help people see through human nature and understand life?

I think this question is true. After all, the title of "seeking holiness" is not a blank check. Imagine some ancient people. What they summed up is very practical now, but it is called "seeking holiness".

Many friends don't know much about guiguzi. They think Guiguzi is a non-existent person, but it is not. Zhu Gongzi lived in the Warring States Period. Because the mole on her forehead is a ghost image, he founded the Guiguzi Sect, hence the name Guiguzi. He is a famous prophet who is proficient in all kinds of knowledge. Military strategists have always called him a soldier saint, which shows that he is also quite talented in war. It's amazing that a person can have so many identities, so I admire this person even more.

People like Guiguzi, what he said can really be used in our present life. Let's give a few examples. Guiguzi said that you should improve your speaking skills when talking to smart people, so that you can appear to be very suitable for them, since you can win people's favor; When talking to stupid people, you must make your words easy to understand and make people understand according to your own advantages; When talking to people with tolerance, we must learn to compliment, which is what we usually call flattery. Only in this way can you please others. When you talk to someone who is eloquent, you must learn to give in and let him speak enough. Only in this way can they satisfy your wishes. When talking to rich people, you must talk about something more elegant, which is more suitable for intelligent enjoyment; Talk to the poor, because their main concern is money.

In fact, there are many such words, but I translated Guiguzi's words into modern Chinese. You can look at it in detail. Is that really the case? The truth of our life lies in the above sentence.