Left the City?

When the sun rose the next morning, Zheng Guo sent out his servants into the city. He informed them not to ask questions, but instead to go to all taverns and inns. He gave them a gold piece each to enjoy themselves. The only thing that he asked was for them to report to the estate guard any gossip they heard from the previous night. He was intentionally vague. If he were to tell them what to look out for, they would only bring him farfetched tales to his liking, instead of the full truth.