Complex sentence: The screenplay is officially also attributed to Chen Liting, but according to Chen himself, it was in fact written by the leftist dramatist Xia Yan, whose authorship was concealed for political reasons.
Split into simpler sentences: The screenplay is officially also attributed to Chen Liting. But according to Chen himself, it was actually written by the leftist dramatist Xia Yan, whose authorship was concealed for political reasons.