Jiang Kangjun is a director at a government building who receives the captured man from Xiao Yuyan. He is familiar with Ye Chuang (Old Ye) and recognizes the significance of the 'smoke' clue, seeing it as an opportunity for a breakthrough. He is polite and offers Xiao Yuyan a ride back, noting his son is inferior to Xiao Yuyan. He maintains a professional yet friendly demeanor.
