Tan Rou intensified her research on the poison left by Mrs. Hai Wei. She had already made some progress with her previous studies, and now her task was to produce the antidote. After all, there was still hope for those people, and if they lost their ability to act, Tan Rou was confident she could save them.
When noon arrived, Tan Rou handed some of her work over to the researchers and returned to her current residence. Before she even entered, she saw Zhuang Liu coming out of the house.
"Why didn't you rest a little longer?" Tan Rou ran over to ask.
Zhuang Liu held a letter in his hand. "I was resting, but someone knocked on my window. When I woke up, I found this letter by my window. I looked around outside the window but saw no one."
He had been resting on the third floor, which meant that the person delivering the letter was incredibly skilled, not only scaling three floors but also retreating with great speed.