Yan Bingyun and Fan Xian were both characters in Maoni's web novel " Celebrating Years " and its derivative works. Yan Bingyun was the son of Yan Ruohai, the spy network of the Qing Kingdom that had been hiding in Northern Qi. On the surface, he was the leader of Northern Qi's spies, who was as cold as ice. His true identity was the head of the spies the Qing Kingdom had sent to Northern Qi, the disciple of Fei Jie. He was loyal to the Qing Kingdom and was used by the Eldest Princess Li Yunrui and Crown Prince Li Chengqian during his diplomatic mission to Northern Qi. He was later rescued by Fan Xian. Fan Xian was the adopted son of Minister Fan Jian, the son of the Minister of Revenue, and the son of Ye Qingmei and the Qing Emperor. He had lived in Danzhou with his grandmother since he was a child. Then, he returned to Jingdou. Relying on his intelligence and luck, he had experienced all kinds of tests and tempering in his family, Jianghu, and the court.