Song Wenjing's friend, son of the former head of the Imperial Medical Academy who resigned due to illness and returned to Jiangzhou several years ago to avoid the corrupt imperial palace. Zhou Linfeng has been living in Beijing for several years and knows a lot about the city. He observed Song Wenjing staring at Rong Shu from Fu Lin Lou and teased him about it. He shared information about the Prince of Qin sending men to Jiangzhou to covertly investigate the Princess of Qin's pregnancy and delivery case.
