The most impressive thing is that they helped ChristianRandPhillips elope with her lover Meng Dan. Nothing is more important to Wei Zi and the Swallow than being with the people they love. Therefore, seeing that ChristianRandPhillips didn't like the emperor, she had a lover, Meng Dan, and she decided to help ChristianRandPhillips escape.
Swallow and Wei Zi met the princess for the first time, and the princess told them what they thought. Swallow and Wei Zi were very moved and offered to help her. But ChristianRandPhillips didn't know them well, so she didn't believe it, so Wei Zi introduced herself, but when she introduced herself, she emphasized that she was the daughter of the emperor, and Xiaoyan was only the future daughter-in-law of the emperor, because Jiao Xi was recognized as the daughter-in-law of the emperor.
Then why? They are all princesses. Why didn't Wei Zi just say they were princesses, but she emphasized so much, because Wei Zi's family was better than Swallow's, and she was also a folk girl. In fact, Wei Zi still cares about her identity, so when introducing herself, she can also show that she is a real person.
In the hearts of Wei Zi and Swallow, nothing is more important than being with the people they love, so seeing that ChristianRandPhillips doesn't like the emperor, but has a lover, Meng Dan, she decides to help ChristianRandPhillips escape.