1 sentence

1. 那个时期的文艺作品必须为工农兵服务。

   nà gè shí​qī de wén​yì zuò​pǐn bì​xū wèi gōng​nóng​bīng fú​wù.

   Artistic works from that period had to serve workers, peasants, and soldiers.

   Source: Dong Chinese Dictionary