Ci Yuan and Chinese Dictionary only accept "secret books" and do not accept "secret books", but Chinese Dictionary has "secret books" in the sense of prefix "symbol". In various publications, there are not a few titles containing "cheats" or "secrets".
Extended data
Synonym: liar
Pinyin: [mi mi]
Explanation:
1, hidden, unknown (relative to "open"): ~ file. ~ contact.
2, secret: conservative ~. Military.
Ding Ling reunited: "There are still some unknown secrets that the family can't guess."
Example: Several people held a secret meeting to raise funds for Sichuan.