Firing a Mosin Nagant 7.62mm carbine, Zhang Taofang is not even using a scope in this Chinese propaganda photo. With or without a scope, his 214 confirmed kill total is an extraordinary accomplishment. The CCF weren't noted for their snipng accuracy, you usually knew they were around when a nearby sandbag suddenly emitted a loud "whack." But they were certainly 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. With careful frontal embankment and tunnels angled shortly after entrance, the snipers would be safe even from direct hits (napalm was a different story). The Chinese propaganda photo below makes this point. As a rule, when assaults were made on enemy positions, strategems such as time-on-target air-burst 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.
