The Sweetest Medicine TSM

Beautiful doctor of Chinese medicine, Yu Gangan woke up from a coma one day to a cold, mysterious man. "Excuse me, you are...?"
A pair of profound eyes focused on her and replied, "Fang Zhihan, your husband."
Did this man take her for a fool? He was obviously a fraud!
A little while down the track, he pulled her into his arms and whispered beside her ear, "Who am I?"
This time, Yu Gangan froze and replied, "Fang Zhihan, my husband."
If he was a patient, then she was his sweetest medicine...