Introduction to Lan Lin's Cryptography Theory

Lingtai is the abbreviation of Lingtai Shi Lan, which is said to be the library of ancient emperors. The reason why the room was named Lan is because Sejong said in "Plain Questions and Direct Solutions": "According to legend, the gods are connected, and their spirit is like Lan." Passwords, precious words, are hidden classics. At the end of this paper, there is a saying that "the room of Linglan has hidden treasures" to emphasize the importance of the content discussed, so the article is named "Linglan secret language" As A?vagho?a's "Su Wen Zhu Zheng Fa Wei" said: "The Yellow Emperor finally chose an auspicious day, and the room of Tibetan Linglan passed on treasures, hence the name."