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.

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. 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.
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.
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. Therefore, Yan Ruohai's biological son was 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. Therefore, Yan Ruohai's biological son was Yan Bingyun.
Yan Ruohai's son was Yan Bingyun. According to the information provided, Yan Bingyun was portrayed as Yan Ruohai's son. This was described in the novel Joy of Life and the TV series Joy of Life. 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.