C1600 An Empty City.

The AI electronic voice of the spaceship said, "Detected that there is poisonous gas in the outside world."

Zhang Lieh frowned, "So, the city is under the attack of the poisonous gas?"

Sunn Mengmeng asked, "Mr. Lieh, is there such a large moat outside the city?"

It was only after Sunn Mengmeng's reminder that he realized that there was a lake surrounding the city