Sci-fi drama Hard Memory: Prisoner Under Air 失忆之城之空气的囚徒 tells of a city in need of memories and oxygen. In the near future, the populace are imprisoned in a walled “city” as their memories are farmed by the ruling class. I imagine they must really need oxygen outside of the walled city since not giving people enough oxygen is probably not the best way to get memories.
Han Geng plays a boxer who helps the poor to win oxygen through fighting matches. The sci-fi drama is produced by and stars Han Geng. Janice Man, Kenny Kwan, Zhang Yuxi join his team while Shawn Yue and Zhang Yujian play the antagonists.