Father's surname is Chen, mother's surname is Yang, and the girl's nickname is carambola.

No, since it's a girl, it's called Chen, with both father's surname and mother's surname, and the mother's surname can't be seen. Just look at the word Yang and think of the word Liu, so choosing the word Liu is also in line with the naming habit of China people. Is Miao a derivative? It feels very good and smooth, and I hope to adopt it.