Xiao En asked if he knew Danzhou.

Xiao En asked Fan Xian about Danzhou because he mistakenly thought Fan Xian was his grandson, and Fan Xian had lived in Danzhou since he was young. Xiao En did not want to kill Fan Xian. He hoped that Fan Xian could protect his secret and Fan Xian's background. This scene appeared in the TV series " Celebrating Years."

The reason Xiao En didn't want to kill Fan Xian was because he knew Fan Xian had grown up in Danzhou, and Xiao En had mistakenly thought Fan Xian was his grandson. This was a trap that Chen Pingping had deliberately set up in order to find out the secret of the temple that Xiao En had mentioned. Xiao En's motivation to live was actually the Qing Emperor's scheme. His goal was to use family ties to obtain the location of the Temple from Xiao En.

Xiao En's relationship with Danzhou was that Xiao En grew up in Danzhou, and Fan Xian also grew up in Danzhou. Xiao En had mistakenly thought Fan Xian was his grandson. This was because the Qing Emperor and Chen Pingping had plotted to let Xiao En know that Fan Xian had been raised in Danzhou in order to obtain Xiao En's secret. This misunderstanding caused Xiao En to develop a close relationship with Fan Xian, who was not directly related to him. Behind this relationship was the Qing Emperor's scheme. He used kinship to achieve his goals.

The relationship between Xiao En and Danzhou in " Celebrating Years " was that Xiao En had placed his own grandson in Danzhou and planned to have Fan Xian escort him back to Northern Qi in the future. Xiao En had mistakenly thought that Fan Xian was his grandson, but in reality, this was just Chen Pingping's scheme. His goal was to make Xiao En let down his guard and reveal his secret in the Temple. Fan Xian had grown up in Danzhou, so Xiao En had let him go on his way back to Northern Qi. The development of this relationship was an important turning point in the plot and also a part of Chen Pingping's plan.

During the Qing years, Xiao En had a close relationship with Danzhou. Xiao En was the leader of Northern Qi's Dark Disk. After being schemed against by the Qing Emperor, he was imprisoned in the dungeon for more than 20 years. In the play, Xiao En mistakenly thought that Fan Xian was the illegitimate child left behind by his son and was also his only living bloodline. Fan Xian had been raised in Danzhou since he was young. Chen Pingping used Xiao En's suspicious nature to make him mistakenly think that Fan Xian was his grandson. He used this to lead Xiao En to reveal the secret of the Temple. Chen Pingping had plotted for many years to let Xiao En guess where his grandson was and make him believe that Fan Xian was his grandson. The purpose of this relationship was to make use of family ties to get the location of the temple from Sean. Thus, the relationship between Xiao En and Danzhou during the Qing years was a trap set up by Chen Pingping to achieve his goal.

Xiao En's relationship with Danzhou was because he grew up in Danzhou. Fan Xian was Xiao En's grandson and had grown up in Danzhou. This caused Xiao En to let Fan Xian go. Xiao En thought Fan Xian was his son's illegitimate son and his only living bloodline. Danzhou's secret was related to Xiao En's personal secret. In order to use family ties to obtain the location of the Temple from Xiao En, the Qing Emperor had planned for a long time. Xiao En's real grandson was trained as a secret agent and sent to Shangjing City in Northern Qi. Thus, Xiao En's relationship with Danzhou was that he grew up there and was also related to Fan Xian's identity.

The reason Xiao En asked Fan Xian about Danzhou was still unclear. Xiao En might have known long ago that Fan Xian had lived in Danzhou since he was young. This might have something to do with his plan. However, the specific reasons and motives had not been explained in the search results provided. Therefore, there was no definite answer to why Xiao En had asked about Danzhou.

The reason Xiao En asked Fan Xian about Danzhou was because he knew Fan Xian had lived in Danzhou since he was young. Xiao En had mistakenly thought that Fan Xian was his grandson and that Chen Pingping had deliberately hidden him in Danzhou. This misunderstanding caused Xiao En to develop special feelings for Fan Xian and not want to kill him.

In Celebrating Years, Xiao En knew about Yan Bingyun's background.

Xiao En learned about Fan Xian's background in the play. In " Celebrating Years," Xiao En told Fan Xian that he had later heard that Ye Qingmei had married the Emperor of the Qing Kingdom. After Fan Xian heard it, he couldn't believe it and confirmed it again. At this time, Fan Xian also knew about his past. In addition, Fan Xian had told Xiao En that he had been born in Danzhou since he was a child. Xiao En had mistakenly thought that Fan Xian was his grandson, and Fan Xian had heard about his own background. Thus, Xiao En learned about Fan Xian's background in the play.