The best online names with homophonic sounds for the combination of Xu and Liu are: Xu Xu Liu Liu, Xu Feng Liu Shui, etc.
1. Xu Xu Liu Liu: This name uses the homophony of "Xu Xu" and "Liu Liu" to give people a relaxed and natural feeling.
2. Xu Feng Liu Shui: This name uses the homophony of "Xu Feng" and "Liu Shui" to give people a fresh and comfortable feeling.