According to references 2 and 3, the Second Prince's letter to Yan Bingyun might have written the following: - Yan Bingyun was Xiao En's grandson. - Chen Pingping's plan for Xiao En's grandson; - The Second Prince learned of Chen Pingping's plan through Zhu Ge. It should be noted that this was only a speculation based on the reference materials. The specific content of the letter could only be known by watching the TV series or reading the original work.
Yan Bingyun's letter had written," Fan Xian's return to court will cause chaos in the Qing Kingdom."
Yan Bingyun's letter had written," Fan Xian's return to court will cause chaos in the Qing Kingdom."
Yan Bingyun's letter had written," Fan Xian's return to court will cause chaos in the Qing Kingdom."
Yan Bingyun's letter had written," Fan Xian's return to court will cause chaos in the Qing Kingdom."
Yan Bingyun's letter had written," Fan Xian's return to court will cause chaos in the Qing Kingdom."
Yan Bingyun's letter had written," Fan Xian's return to court will cause chaos in the Qing Kingdom."
Yan Bingyun's letter had written," Fan Xian's return to court will cause chaos in the Qing Kingdom."
Yan Bingyun's letter had written," Fan Xian's return to court will cause chaos in the Qing Kingdom."
Yan Bingyun's letter had written," Fan Xian's return to court will cause chaos in the Qing Kingdom."
The Second Prince's letter to Yan Bingyun was about the state of Qing court and the unrest that Fan Xian's return to court might cause. The letter mentioned that Fan Xian's return to court would cause unrest in the Qing Kingdom and make it easy for Northern Qi to use him. The Second Prince told Yan Bingyun the ins and outs of the matter and expressed that Fan Xian would fight to the death with him after he returned. The contents of the letter were not mentioned, so he could not give a more specific answer.