Chang'an, the capital of Great Xia, had always been known as the city that never sleeps.
There was no curfew here, so the main streets were still bustling with people and pedestrians even late at night.
Teams of city guards were constantly patrolling the streets. Near the palace, the patrolling guards became the Huben Troops.
Someone had once calculated that there were as many as 30,000 soldiers patrolling Chang'an every day.
With so many people patrolling the city, there was almost no blind spot in Chang'an.
Of course, no matter how tight the security was, it was not flawless.
As long as one was human, there would always be flaws.
Zhou Shu stood at the corner of the street and observed for the greater part of the night. He grabbed hold of the gap between two squads of patrolling soldiers. In the blink of an eye, he crossed the Zhu Estate's high wall like a bolt of lightning.