Why does Liuli Sifeng like Xuanji and has been guarding silently for many years?

In the TV series "Coloured Glass", Si Feng always likes Xuan Ji, and silently guards her, so why does Si Feng like Xuan Ji in "Coloured Glass"? Sifeng was a big disciple of Lize Palace before he knew Xuanji at the beginning, and he was also the son of the Lord of Lize Palace. His personality was very calm and rational, and he was calm to anyone, but the appearance of Xuanji made him lose his calm and reason.

In the play, Si Feng likes Xuan Ji because only his innocence can make him feel excited. As a big disciple from Zegong, Sifeng's personality has always been calm and rational and alienated from people, but the scene when two people met at first was very funny. Sifeng, who first arrived in the Central Plains, was not familiar with it, so he stuttered when he spoke. At this time, Sifeng met Xuan Ji, and because Xuan Ji didn't understand anything, he imitated Sifeng's speech. SiFeng is the first time to meet such a person, and the fate between two people has been forged.

After Xuanji went down the mountain, Sifeng and Xuanji met again, and they walked together. In the process, Sifeng found herself in love with this naive girl who knew nothing about the world. When Xuan Ji's birthday, she accidentally learned that today is also Sifeng's birthday, so she ran to send a birthday cake to Sifeng. Every time Sifeng was in danger, Xuan Ji would inspire the strength in her body to become a god of war, and she would say some very touching words to Sifeng. These are all things that Xuan Ji did to others.

So SiFeng gradually fell in love with her in all these things that XuanJi did, but XuanJi was always a heartless person, even if XuanJi had fallen in love with SiFeng, she didn't know it, so this also caused SiFeng to get angry silently.

Another strong opponent of Si Feng is Hao Chen. Hao Chen has always liked this Xuanji, and after knowing that Si Feng also likes Xuanji, he often targets Si Feng. However, Si Feng has devoted his whole heart to Xuanji, so he will never have the experience to manage Hao Chen.