be unaware of the truth; be ignorant of the facts (/the actual si tuation); be kept in the dark;/半夜里，他煽动一些～的人闹事。At midnight he stirred up trouble among some people who were ignorant of the facts.
不明真相相（象）bù mínɡ zhēn xiànɡ
不明白事情的真相。not to understand the true situation,be kept in the dark,be ignorant of the actual situation