真伪莫辨

真伪莫辨	zhēn wěi mò biàn	can't judge true or false (idiom); unable to distinguish the genuine from the fake / not to know whether to believe (what one reads in the news)
真	zhēn	really / truly / indeed / real / true / genuine
真伪	zhēn wěi	true or bogus / authenticity
伪	wěi	false / fake / forged / bogus / (prefix) pseudo- / Taiwan pr. [wei4]
伪	wěi	variant of 伪
莫	Mò	surname Mo
莫	mò	do not / there is none who
辨	biàn	to distinguish / to recognize