Meaning of mán:
mán
瞒
Verb
to conceal from; to keep (sb) in the dark
Tā yīzhí zài duì fùmǔ mán zhège jìhuà.
他一直在对父母瞒这个计划。
He has been concealing this plan from his parents.
Tā yīzhí zài mán zhe wǒmen guānyú zhè cì lǚxíng de jìhuà.
他一直在瞒着我们关于这次旅行的计划。
He has been keeping us in the dark about the plans for this trip.
