tiān​jī​bù​kě​xiè​lù

top secret

Senses

天机不可泄露/ 天機不可泄露 tiān​jī​bù​kě​xiè​lù (also tiān​jī​bù​kě​xiè​lòu) top secret

literally meaning "mysteries of heaven must not be revealed"; used as an idiom to say that one is not at liberty to inform someone about a secret or that a matter must be kept strictly confidential

References

variant 天机不可泄漏/天機不可洩漏 天机不可泄露/天機不可泄露
variant 天机不可泄漏/天機不可泄漏 天机不可泄露/天機不可泄露