What is the meaning of hidden pulse?

Hidden pulse was created by martial arts novelist Feng Ge in his work The Sea, and was later discovered.

* * * has 31 pulses, which is ternary emperor pulse and 28 pulses. Ternary emperor pulse is Wei Zi pulse, Taiwei pulse and Shitianmai pulse. Twenty-eight veins are named after twenty-eight stars. They are: Jiao, Kang, Bian, Fang, Xin, Wei and Ji all belong to the Seven Veins of Oriental Qinglong; Osmium, Lou, Stomach, Chang, Bi, Gou and Shen belong to the seven veins of Xibaihu; Well, ghosts, willows, stars, birds, Zhang and wings belong to the seven veins of southern Suzaku; Bucket, ox, female, deficiency, danger, house and wall belong to the seven veins of Xuanwu in the north. On the contrary, it is obvious pulse, that is, eight strange meridians, twelve normal meridians and fifteen collaterals. The displayed pulse does not communicate. Hua Chuang created a kind of hidden pulse technique, which is characterized by autonomous robbery at sea and is recorded in Xiang Forgetting Collection. The mirror ceiling, the mirror ring and the romantic flow after the wind also created a hidden pulse skill, and the position of robbing the sea could not be controlled by itself, so it was named "Black Book".

It takes two people to cultivate the hidden pulse kung fu, one is a robber and the other is a slave. They follow the four laws of whether there is or not. Any practitioner needs someone to help him practice with his true qi. But once you practice, it's robbing the master who is really angry and robbing the slave who is practicing. Without the master's true spirit, the slave robbers can't resist the' dark robbery'. The four laws of existence and non-existence are: 1: no owner, no slave; 2. Borrow and return; 3: giving and receiving; 4: endless. But there is another way, that is, step by step to follow the right path of "practicing essence, spirit, spirit, spirit returning to emptiness, and virtual harmony", and naturally it will enter the hidden pulse from the obvious pulse. In this way, the magic can be practiced by yourself, without robbing the master and slaves, and without being bound by the existence of the four laws.