Yan Ruohai had a son named Yan Bingyun. Even though Yan Bingyun was revealed in the plot as the head of the Northern Qi spies secretly trained by the Overwatch Council, his true identity was the grandson of Xiao En, the head of the Northern Qi spies. Therefore, according to the information provided, Yan Ruohai's biological son was Yan Bingyun.

According to the information provided, Yan Ruohai's son was Yan Bingyun. Even though Yan Bingyun was revealed in the plot as the head of the Northern Qi spies secretly trained by the Overwatch Council, his true identity was the grandson of Xiao En, the head of the Northern Qi spies. Therefore, Yan Ruohai's biological son was Yan Bingyun.
Yan Ruohai's son was Yan Bingyun. Yan Bingyun was portrayed as Yan Ruohai's son. Although he was revealed in the plot as the head of Northern Qi spies secretly trained by the Overwatch Council, his true identity was the grandson of Xiao En, the head of Northern Qi spies. Therefore, Yan Ruohai did have a son named Yan Bingyun.
Yan Ruohai's son was Yan Bingyun. In the novel Joy of Life and the TV series Joy of Life, Yan Bingyun was portrayed as Yan Ruohai's son. Even though Yan Bingyun was revealed in the plot as the head of the Northern Qi spies secretly trained by the Overwatch Council, his true identity was the grandson of Xiao En, the head of the Northern Qi spies.
Yan Ruohai's son was Yan Bingyun. Even though Yan Bingyun was revealed in the plot as the head of the Northern Qi spies secretly trained by the Overwatch Council, his true identity was the grandson of Xiao En, the head of the Northern Qi spies. Therefore, Yan Ruohai's biological son was Yan Bingyun.
The Yan Bingyun in Joy of Life was not Yan Ruohai's biological son. He was the grandson of Xiao En, the chief spy of Northern Qi who had been secretly trained by the Overwatch Council.
Yes, Yan Ruohai and Yan Bingyun were confirmed to be father and son. In " Joy of Life," Yan Bingyun was Yan Ruohai's son. He was the eldest son of Yan Ruohai, the head of the Fourth Bureau of the Inspection Council. He was also an important helper to Fan Xian. Although there were some secrets about Yan Bingyun's true identity in the movie, Yan Ruohai knew Yan Bingyun's background. He knew that Yan Bingyun was Xiao En's grandson and had always treated Yan Bingyun as a father and son.
In reality, Yan Bingyun was not Yan Ruohai's biological son. He was the grandson of Xiao En, the chief spy of Northern Qi who had been secretly nurtured by the Overwatch Council.
Yes, Yan Ruohai and Yan Bingyun were confirmed to be father and son. Even though Yan Bingyun was not his biological son, he was regarded as his own by Yan Ruohai. Furthermore, Yan Ruohai clearly knew about Yan Bingyun's background. In the novel Joy of Life and the TV series, Yan Bingyun was Yan Ruohai's confidant and best helper. He had been trained to be Fan Xian's trusted aide. At the same time, he was also the head of the Qing spies lurking in Northern Qi. Therefore, it could be confirmed that Yan Ruohai and Yan Bingyun had a father-son relationship.