In " Celebrating Years," Xiao En learned about Fan Xian's past in a long conversation in the cave. In the second document, it was mentioned that Fan Xian and Xiao En hid in a cave. Xiao En decided to tell Fan Xian the secret he was keeping. At first, Fan Xian was suspicious of Xiao En's identity, but in their conversation, Fan Xian revealed his background, making Xiao En realize that Fan Xian was Ye Qingmei's son. Thus, Xiao En found out about Fan Xian's background in the cave.
Xiao En recognized Fan Xian on the way back to Northern Qi in the TV series " Celebrating Years." To be more specific, Fan Xian had mentioned his mother, Ye Qingmei, in his conversation with Xiao En. This made Xiao En begin to suspect Fan Xian's identity. Afterwards, when Fan Xian heard Ye Qingmei's story, he showed a shocked reaction, which further deepened Xiao En's suspicions. Finally, at the entrance of the cave, Xiao En revealed the secrets of the Temple to Fan Xian and told him about his past. He confirmed that Fan Xian was Ye Qingmei's son. Thus, Xiao En recognized Fan Xian's identity on the way back to Northern Qi.
Xiao En recognized Fan Xian on the way back to Northern Qi in the TV series " Celebrating Years." To be more specific, Fan Xian had mentioned his mother, Ye Qingmei, in his conversation with Xiao En. This made Xiao En begin to suspect Fan Xian's identity. Later, when Fan Xian heard Ye Qingmei's story, he showed a shocked reaction. This further deepened Xiao En's confirmation of Fan Xian's identity. Thus, Xiao En recognized Fan Xian's identity on the way back to Northern Qi.
Xiao En told Fan Xian about his past in the 41st episode of " Celebrating Years."
Xiao En recognized Fan Xian on the way back to Northern Qi in the TV series " Celebrating Years." To be more specific, in their conversation, Fan Xian had mentioned his mother, Ye Qingmei, which had aroused Xiao En's suspicion. Later, when Fan Xian heard Ye Qingmei's story, Xiao En realized Fan Xian's true identity and chose to reveal the secret of the Temple to him.
Through Chen Pingping's scheme, Fan Xian had made Xiao En mistakenly believe that he was his grandson. Chen Pingping often revealed information about his grandson to Xiao En, which gradually made Xiao En believe this lie. From Xiao En, Fan Xian learned his true identity. He did not mention the exact process of finding Sean.
The reason Fan Xian had let Xiao En out was to exchange for Yan Bingyun's life. Fan Xian was the grandson of the Qing Emperor's son, Xiao En. While he was escorting Xiao En back to Northern Qi, Fan Xian had plotted to let Xiao En go, but then he had desperately tried to capture him back. Fan Xian needed to use Xiao En's life to exchange for Yan Bingyun's life. In order to protect Xiao En, Fan Xian had to protect his secret and Fan Xian's background.
There were two reasons why Fan Xian let Xiao En go. First, Fan Xian needed to use Xiao En's life to exchange for Yan Bingyun's life. Fan Xian was the grandson of the Qing Emperor's son, Xiao En. While he was escorting Xiao En back to Northern Qi, Fan Xian had plotted to let Xiao En go, but then he had desperately tried to capture him back. In order to protect Xiao En, Fan Xian had to protect his life in exchange for Yan Bingyun's life. Secondly, Xiao En had mistakenly thought that Fan Xian was his grandson. This was Chen Pingping's scheme. From the very beginning, Chen Pingping had made Fan Xian a part of his plan, making Xiao En mistakenly think that Fan Xian was his long-lost grandson. The purpose of doing so was to get Sean's secret about the temple.
Xiao En recognized Fan Xian on the way back to Northern Qi in the TV series " Celebrating Years." To be more specific, Fan Xian had mentioned his mother, Ye Qingmei, in his conversation with Xiao En. This made Xiao En begin to suspect Fan Xian's identity. Later, when Fan Xian heard Ye Qingmei's story, he showed a shocked reaction. This further deepened Xiao En's doubts about Fan Xian's identity. However, the search results did not clearly mention when Xiao En knew Fan Xian was Ye Qingmei. Therefore, based on the information provided, it was impossible to determine when Xiao En knew Fan Xian was Ye Qingmei.
In the plot, Xiao En did not know that Fan Xian was Ye Qingmei's son. In Fan Xian's conversation with Xiao En, Xiao En began to suspect Fan Xian's identity, but he did not directly learn that he was Ye Qingmei's son. Before Xiao En died, Fan Xian took the initiative to reveal his identity. Therefore, based on the information provided, it was impossible to determine when Xiao En knew Fan Xian was Ye Qingmei's son.
Xiao En and Fan Xian had no relationship in " Celebrating Years." Chen Pingping used Xiao En's suspicious nature to make him mistakenly believe that Fan Xian was his grandson. He used this to pry out the secrets of the Temple. Chen Pingping had been sending false information to Xiao En, making him believe that Fan Xian was his grandson. He had also planned to train Fan Xian to become someone who hated Northern Qi and let him destroy everything Xiao En had. Fan Xian had never heard of Xiao En, so he answered Xiao En's question truthfully. In the end, on the way to escort Xiao En back to Northern Qi, Xiao En took the initiative to tell Fan Xian the secret of the Temple and revealed Fan Xian's background. Thus, Xiao En had mistakenly thought that Fan Xian was his grandson, but in reality, the two had no relationship.