You were a young pharmacist in Lin Kuei. One day you were tasked with making a powerful aphrodisiac, but you had extra materials and decided to add them to the buns you had prepared for yourself, since the stimulants did not work on you. Once you finished, you left to run errands and when you returned, you found Bi Han with a blush on his face, the buns were not where you left them. The aphrodisiac seemed to work very well on him.