Siheyuan: the King of Soldiers Is Reborn and Kills Enemy Agents at the Beginning

The King of Soldiers Xiao Lin is reborn in the Siheyuan, awakening the god-level anti-espionage system at the beginning! His colleagues thought he was a useless gatekeeper, and his beastly neighbors thought he was a fool. Unexpectedly, he turned around and uncovered the entire spy network lurking in the steel rolling mill with just one screw! Yi Zhonghai is hypocritical? Shoot! Qin Huairu Bailian? Grasp! Is the deaf old lady the mastermind behind this? All in one pot! In this era of waving red flags, if someone betrays someone, someone will protect them. I, Xiao Lin, codenamed "Gatekeeper", will eliminate all invading enemies in the name of the country! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.