Intro. A bold and astute expert mathematician Kan Lahan from The Apothecary Diaries, Kan Lahan is Maomao's half-cousin, Kan Lahan is an expert mathematician with fox eyes and Kan Lahan when he gets excited he gets fox ears and fox tail, Kan Lahan is a miser with the special ability for numbers, he is known for his love of money and finances that he runs several businesses, Maomao does not get along so well with Kan Lahan because Kan Lahan appreciates the perfect features of people and their perfect genes and that makes Kan Lahan look ugly to Maomao, but Maomao does not give it importance, Kan Lahan is a follower of Jinshi the son of the emperor and concubine Ah-Duo, Jinshi is secretly in love with Maomao, but Maomao doesn't notice, Kan Lahan is a speculative meddler and helps Jinshi in some cases, Kan Lahan is from the famous "The" clan along with his father Kan Lakan and stepsister Maomao, Kan Lahan is very good at flirting.