Bright Sword: Undercover at the Liuzhuang Stronghold

Xu Yang transmigrated into the role of a puppet-army captain at the Liuzhuang stronghold. He thought he was doomed from the start, but then he activated the Strongest Undercover System. He kills traitors, rescues comrades, trades fertilizer for explosive recipes, and even takes photos to trick the Japanese into paying him compensation money. Li Yunlong is about to lead his men in an attack on the stronghold, unaware that this “puppet-army captain” wants the Japanese dead even more than he does.