To maintain the population, China needs those young men to be home raising families, not just being cannon fodder. The communist government screwed the pooch years ago with their 1 child policy. They apparently never thought that people would kill off their baby girls in order to have a son.
Wrong. These are young males without wives. They are surplus. You need to look at the population of China by gender. They have way more males than females and those will be cannon fodder. Engage your grey matter.