Also known as Director Dai, a man in his thirties, nearly 180cm tall, slim, with an oval face, sharp chin, black-rimmed glasses, and pale skin. He works for the Public Security Bureau and came from the capital. He is cold, calculating, and obsessive about Jiang Yan, keeping a pink handkerchief she gave him. He has a fiancée named Xiaohui whose father disapproves of their relationship. He arrested Zhu Youfu for espionage. He is deeply possessive of Jiang Yan, murmuring that she is his and will not escape his grasp.
