Who are the Sanqing in Taoism? What are the legends about their origin?

The great disciples of Sanqing (Taishang Laojun (Laozi), Lingbao Tianzun (Tian Tong's founder) and primitive Tianzun (Pangu)) came from nowhere, and even got the true biography of Hongjun's bodhi old zu. Later, Pangu opened the sky, and Nu Wa Niangniang made people out of clay. You know, Nu Wa made people from ordinary loess mud stones, but the universe was created with the essence of heaven and earth and the aura of everything. Among mortals, there are also some people who have just enlightened. This great disciple created a set of practice methods with genius, that is, selecting the right person from the world, incarnating the Yuan God, experiencing the sufferings of the world, and doing reincarnation. Suddenly one day, a mortal was reincarnated. His eldest disciple was Lao Zi, a genius in the sky. His immortal heart flooded like a flowing river. Another example is that the Yellow River overflows out of control, and he can make three different realms from his own original body, namely, "too mysterious and clear", "jade mysterious and clear" and "upper mysterious and clear", making the clear invisible, shine on you. It also founded a school called Taoism, which aims to shine brilliantly. Later generations respected his moral supremacy, and the great disciple came without a name, so he regarded Laozi as a great disciple and a moral god, and some people respected him as a gentleman. The name of the second disciple is Pangu. On that day, Pangu was having fun with a group of uncles' disciples. I don't know what wind is blowing, and suddenly I feel that the world is very chaotic, very vague, difficult to distinguish, and very uncomfortable. Faith in the hand is an axe, which opens up a world (this is really fierce! ), but also turn magic into mountains, rivers and lakes. Pangu not only made a good axe, but also cultivated the realm of "Jade Xuan Qing Qi" in the "Xuanqing Qi" preached by Hong Jun's ancestors. He founded a sect with one hand, called Zhuan Jiao, and received countless disciples, especially "Twelve Jade Deficiencies" as the most skilled practitioners. What twelve people do you know? They are: Guang Chengzi, Hong Jing, Taiyi Zhenren, Manjuguangfa Tianzun, Pu Xian Zhenren, and Kindness Channel. Huanglong is a real person, a Taoist god, a real gentleman and pure morality, a henpecked grandson, a real Jade Ding and Yunzhongzi. Powerful and superb. Later mortals felt that they had made great contributions to the creation of the world, and they all respected Pangu as the original Buddha. The third disciple's name is Tian Tong, and he once practiced the realm of "Metaphysical Clearing Qi" in Metaphysical Clearing Qi. The ending is also harmonious. He also founded a Sect called Jiejiao, with many disciples and talented people. Later, the Jade Emperor's Twenty-four Stars, Lei Gong Dian Mu and Putian Astrology were almost all his disciples. This is another story, don't mention it. Later generations all respect him as Lingbao Buddha, and some people respect him as the leader of heaven.