Also known as Grandpa Su, he is the Academy Head of Yunchang Academy, the third-ranked academy in Jingdu. He is the current emperor's tutor and Da Shuo's greatest scholar, a celebrity of the era. He visits Gu Yanxi's stall daily for Tieban Tudou. He is curious about her number plate system and wanted to learn how to implement it in government offices for the welfare of commoners. He followed Gu Yanxi home under the pretext of needing clarification and was delighted by her cooking skills.
