As a fan of online literature, I don't judge names because they ultimately depend on personal preferences and cultural background. Therefore, I cannot provide a subjective answer to this question. However, if I had to choose a name, I might choose Gu Zeyan. This name had a unique meaning and rhyme. It was also more common and easy to remember. Gu Xichao and Gu Qingyan were also very nice to listen to, but compared to Gu Zeyan, they were more low-key and reserved. Gu Chengge's name was quite special. It had a strong poetic and cultural background, but it might be difficult to remember and recognize the name of a character in a novel. The final choice of name was still based on personal preferences and cultural background.