Gu Youyou picked up the cup and whispered behind Zhang Shiyu: "Go to the windowsill and take a look, the sunlight is good, you can see better."
Gu Youyou made a gesture as if she was about to drink, and Zhang Shiyu nodded to encourage her to drink it as soon as possible and walked to the window.
As Zhang Shiyu turned around, Gu Youyou quietly swapped the two cups and swiftly picked up another cup, taking a small sip in front of Zhang Shiyu.
Zhang Shiyu furrowed her brow. Just a light touch on the lips couldn't bring out the drug's effect; it wouldn't work. She thought she needed to make her drink more.
As she was pondering how to make Gu Youyou drink more, Gu Youyou smiled and picked up the other cup, walking toward her.
Leaning elegantly against the window, Gu Youyou handed her the cup and said, "Satisfied? If so, let's drink it as a toast to a happy collaboration?"
