In traditional Chinese the character 祕 may be used.
confidential grains are a must.
The grain must be kept secret
Grain must remain confidential.
You need to log in to write a story for 秘
Definitions for 秘 pronounced as mì
- variant of 秘[mi4]
Definitions for 秘 pronounced as bì
- see 秘魯|秘鲁[Bi4 lu3]