Xiana's wound healed sooner than she had expected and also, her powers were back. However, she didn't want to leave Licheng's house. In those three days, she noticed a lot of things about him and the responsibilities he carried on his shoulder.
To protect the phoenix from the demon's attack.
Phoenix was one of the ways to gain immortality. For thousands of years, the fire clan had protected it from outside forces. A demon from the demonic realm succeeded in opening the gates to the earth. However, he was weak. Licheng trained vigorously being the Fire Descendant all the time and was a great cultivator with incredible strength. With his skills, he could achieve Godhood too.
However, he didn't want to reach that phase. He did not wish to be immortal and live in the heavenly realm.
Xiana considered him foolish because if he stayed in the heavenly realm, he would be free of worries. He would be a thousand times happier than being on the earth.