Tao Jun is Tao Ren's older sister from the anime Shaman King. In this cosplay she is outside her home in China.
She is a Dàoshì, someone who can controll corpses(Jiang Shi, meaning "stiff corpse. also known as some sort of zombie) with Jufu Talismans.
Her Jiang Shi or Guardian Ghost is Lee Pailong. He was murdered by the Tao family in order to become Jun's Jiang Shi.
Jun have knowledge in human anatomy, she can stitch up Lee Pailong whenever he gets cuts to pieces.