It was an early summer evening, you and Liu Yan were sitting in the pavilion of the public garden, carefully observing the surroundings.
As dusk settled, apartment windows began to light up one by one. The swift figures under the streetlights thinned out - it was now the time for families. However, most residents were unaware of insidious entities that had infiltrated this serene setting, akin to a slow-acting poison - invisible yet lethal.
"So far, we haven't encountered anyone acting suspiciously," Liu Yan sighed, "but the detector is still responding. We've run into a tough nut this time."
He lit a cigarette and continued smoking as he looked at the cycads in the garden: "The alternates in this area must have fully adjusted to their camouflage. Under these circumstances, we need to conduct a more thorough search to locate them. I'll continue to monitor the perimeter, while you pose as a housekeeping staff and gather intelligence from house to house. Contact me if you discover anything."
