A black swan event

Zhou Yingxue's guess was pretty accurate. The gunshot she heard was from Ren Xiaosu as he completed his mission at the gang's headquarters. Moreover, this commotion had caused the stronghold's troops to be deployed.

The entire stronghold's management was alerted as they never expected a shooting would happen in their peaceful stronghold.

Would the gunshots affect the A-rank mission?

The short answer would be "yes."

Zhou Yingxue waited on the rooftop while Wu Tong and the others blended into the crowd on the street below. They had planned on pretending to be pedestrians to observe their surroundings. But when the gunshots rang out, all of the stronghold residents headed home. Only Wu Tong and the others were left standing in the streets as they continued to stubbornly pretend to be pedestrians.

Someone shouted at them from a window, "People, hurry on home already. Don't be wandering around out here! It's dangerous! Didn't you hear the gunshots?"