Firing a Mosin Nagant 7.62mm carbine, without scope, this is an improbable accreditation, but stranger things have happened. Certainly the CCF weren't noted for their sniper capabilities, but were good enough so that only the inexperienced casually wandered around where they might be under observation from unfriendly eyes.

The "Underground Wall Of China" permitted snipers on forward slopes to man their positions until artillery actually began to fall, and then simply back into the tunnels behind them. This Chinese propaganda photo below makes this point. As a rule, when assaults were made on enemy positions, strategems such as time-on-target barrages fired after a period of inactivity long enough for the CCF to re-emerge from their holes tended to reduce the effectiveness of their responses.