HSK6
méngzàigǔlǐ
lit. kept inside a drum
蒙在鼓里 (蒙在鼓裡)
lit. kept inside a drum (idiom); fig. completely in the dark
蒙在鼓里 (矇在鼓裡)
variant of 蒙在鼓裡|蒙在鼓里[méngzàigǔlǐ]
CC-CEDICT