Why do many Taoist Laozi, Zhuangzi and Liezi talk about it, but no one talks about Paopuzi? What if you don't understand?

Because at that time, a hundred schools of thought contended, and there were many saints, who wrote books one after another. Theories that people have been circulating or that students have been using will be widely circulated. In particular, Confucius and Mencius, Confucianism and Taoism, and Laozi are all ancestors of Taoism. Their philosophical books about Tao Te Ching are widely circulated, and there are many famous artists. Although they all left their masterpieces, it is understandable that they are not known to most ordinary people. Including: Bao Puzi, Xunzi, Mozi, Han Feizi and many other famous works. Because at that time, a hundred schools of thought contended, and there were many saints, who wrote books one after another. Theories that people have been circulating or that students have been using will be widely circulated. In particular, Confucius and Mencius, Confucianism and Taoism, and Laozi are all ancestors of Taoism. Their philosophical books about Tao Te Ching are widely circulated, and there are many famous artists. Although they all left their masterpieces, it is understandable that they are not known to most ordinary people. Including: Bao Puzi, Xunzi, Mozi, Han Feizi and many other famous works. Because at that time, a hundred schools of thought contended, and there were many saints, who wrote books one after another. Theories that people have been circulating or that students have been using will be widely circulated. In particular, Confucius and Mencius, Confucianism and Taoism, and Laozi are all ancestors of Taoism. Their philosophical books about Tao Te Ching are widely circulated, and there are many famous artists. Although they all left their masterpieces, it is understandable that they are not known to most ordinary people. Including: Bao Puzi, Xunzi, Mozi, Han Feizi and many other famous works.