Heaven and earth are unkind to all things, while saints are unkind to the people. Where did it come from? What do you mean?

This quote comes from the fifth chapter of Tao Te Ching, and the whole chapter of the fifth chapter reads: Heaven and earth are heartless, and everything is treated as a straw dog; Saints are heartless and treat the people like pigs. Between heaven and earth, is it still ambiguous? Virtual and unyielding, moving out. It is better to keep the middle than to hear more and count the poor. Vernacular meaning: Heaven and earth have no mercy, it has no kindness, and treats everything like a dog, leaving everything to its own devices. Saints have no mercy, and they also treat people like pigs, leaving people to take care of themselves. Isn't it like a bellows between heaven and earth? It is empty but not exhausted, and the more it is encouraged, the more wind it will be, and it will be endless. Numerous decrees are even more confusing and unworkable, so it is better to keep quiet. Laozi's Tao Te Ching has a saying: "Heaven and earth are heartless, and everything is a straw dog"-most people criticize Laozi for being insidious and mean, and seeing things too thoroughly. Because they explained that the meaning of this sentence is that heaven and earth are indifferent, giving birth to everything and playing with everything as a straw dog. This is a misunderstanding of Laozi's thoughts, or a deliberate misinterpretation for humor. The original intention of Lao Tzu's "straw dog" is a dog made of grass. Dogs were originally used as sacrificial sacrifices in ancient times, such as cold pig heads, cows, sheep, etc. Later, due to the evolution of social atmosphere, real dogs were no longer used, but a dog shape was tied with grass instead. It is equivalent to replacing the real pig's head with a pig's head made of noodles when worshipping. After the straw dog was made, before it was used for sacrifice, everyone attached great importance to it and dared not touch it casually; After the sacrifice, I threw it into the garbage. Confucianism often says that heaven and earth have benevolence and breed all things; When you are old, you say that heaven and earth are indifferent and heartless. Everything was born in heaven and earth, and I didn't want to get any reward back. People help others, often with conditions attached, hoping to return. So Lao Tzu said that man should imitate heaven and earth. Heaven and earth gave birth to everything, and he did not take credit; Heaven and earth give life to all things, and he doesn't think he is glorious; Heaven and earth have done good things, making everything endless. Whatever you can do, do it, no conditions. Therefore, to truly become a saint, we must follow the spirit of heaven and earth and cultivate such a mind. Therefore, the real meaning of Laozi's "Heaven and Earth are heartless, taking everything as a straw dog" is that everything in heaven and earth, like the lost grass dog, is not particularly good for people, but particularly bad for other things. The reason why people are poor to everything is because of people's subjectivity and selfish concept.