"Teacher Bei Qi, why aren't you resting at this time?"
He reached out and passed a small clear bottle to her. "Ms. An, here. This is something I've just concocted."
An Xiaoning received the bottle from him. Under the light, she could see that the liquid contained in the bottle appeared slightly yellowish. "Teacher Bei Qi, what is this?"
"I heard from Chief Fan that Young Sir isn't sleeping very well, so I especially concocted this chemical that can effectively relieve the symptoms of insomnia. I've tried it on myself for a week and there aren't any undesirable side effects."
"Then, how is this chemical used?"
