Xiao En thought Fan Xian was his grandson.

Xiao En thought Fan Xian was his grandson because of Chen Pingping's scheme. Chen Pingping hoped that by making Xiao En believe that Fan Xian was his grandson, he could learn the secrets of the Divine Hall and other secrets from him. Fan Xian listened to Chen Pingping's plan and made Xiao En mistakenly believe that he was his grandson. In the end, Fan Xian did not expose the lie when he learned of the secret and his background, giving Xiao En one last comfort. However, according to other search results, Fan Xian was actually the adopted son of the Qing Minister of Revenue, Fan Jian, and the son of the Qing Emperor. He was not related to Xiao En. Therefore, Sean was wrong.

Fan Xian was not Xiao En's biological grandson. Fan Xian's true identity was the son of the Qing Emperor and Ye Qingmei. Xiao En was mistaken for his biological grandfather. Xiao En's biological grandson was Yan Bingyun. Chen Pingping had devised a scheme in the play to make Xiao En mistakenly believe that Fan Xian was his grandson. He used this to pry out the secret Xiao En had long held regarding the Temple. Therefore, Fan Xian was not Xiao En's biological grandson.

Fan Xian was not Xiao En's grandson. Fan Xian's true identity was the son of the Qing Emperor and Ye Qingmei. Xiao En was mistaken for his biological grandfather. Xiao En's biological grandson was Yan Bingyun. Chen Pingping had devised a scheme in the play to make Xiao En mistakenly believe that Fan Xian was his grandson. He used this to pry out the secret Xiao En had long held regarding the Temple. Therefore, Fan Xian was not Xiao En's grandson.

Fan Xian was not Xiao En's biological grandson. Fan Xian's true identity was the son of the Qing Emperor and Ye Qingmei. Xiao En was mistaken for his biological grandfather. Xiao En's biological grandson was Yan Bingyun. Chen Pingping had devised a scheme in the play to make Xiao En mistakenly believe that Fan Xian was his grandson. He used this to pry out the secret Xiao En had long held regarding the Temple.

Fan Xian was not Xiao En's grandson. Fan Xian's true identity was the son of the Qing Emperor and Ye Qingmei. Xiao En mistakenly believed that Fan Xian was his grandson because of Chen Pingping's scheme. Chen Pingping used Xiao En's suspicious personality to make him mistakenly believe that Fan Xian was his grandson. He used this to pry out the secret Xiao En had long held regarding the Temple. Thus, Fan Xian was not Xiao En's grandson.

Fan Xian was not Xiao En's grandson. Chen Pingping used Xiao En's suspicious personality to make him mistakenly believe that Fan Xian was his grandson. He used this to pry out the secret Xiao En had long held regarding the Temple. Xiao En had determined through various events that his grandson was actually Yan Bingyun. Thus, Fan Xian was not Xiao En's grandson.

Fan Xian was not Xiao En's biological grandson. Fan Xian's true identity was the son of the Qing Emperor and Ye Qingmei. Xiao En was mistaken for his biological grandfather. Xiao En's biological grandson was Yan Bingyun. Chen Pingping had devised a scheme in the play to make Xiao En mistakenly believe that Fan Xian was his grandson. He used this to pry out the secret Xiao En had long held regarding the Temple. Therefore, Fan Xian was not Xiao En's biological grandson.

Fan Xian was not Xiao En's biological grandson. Fan Xian's true identity was the son of the Qing Emperor and Ye Qingmei. Xiao En was mistaken for his biological grandfather. Xiao En's biological grandson was Yan Bingyun. Chen Pingping had devised a scheme in the play to make Xiao En mistakenly believe that Fan Xian was his grandson. He used this to pry out the secret Xiao En had long held regarding the Temple. Therefore, Fan Xian was not Xiao En's biological grandson.

Fan Xian was not Xiao En's biological grandson. Fan Xian's true identity was the son of the Qing Emperor and Ye Qingmei. Xiao En was mistaken for his biological grandfather. Xiao En's biological grandson was Yan Bingyun. Chen Pingping had devised a scheme in the play to make Xiao En mistakenly believe that Fan Xian was his grandson. He used this to pry out the secret Xiao En had long held regarding the Temple. Therefore, Fan Xian was not Xiao En's biological grandson.

Fan Xian was not Xiao En's grandson. Fan Xian's true identity was the son of the Qing Emperor and Ye Qingmei. Xiao En mistakenly believed that Fan Xian was his grandson because of Chen Pingping's scheme. Chen Pingping used Xiao En's suspicious personality to make him mistakenly believe that Fan Xian was his grandson. He used this to pry out the secret Xiao En had long held regarding the Temple. Therefore, according to the information provided, Fan Xian was not Xiao En's grandson.