Three-character names are more common, and the rate of duplicate names will be much lower. Surnames are relatively neutral Chinese characters. Even if the parents’ surnames are combined in the name, sometimes the gender cannot be determined through the name, so in It would be better to add a good word that is easier to distinguish between genders. For example, Lin Xuanchu, the word "Xuan" means majestic and majestic, very masculine. Anyone who looks at it will know that it is a boy's name. If you are a girl, you can name her Lin Chuchu or Lin Chuyue, both of which are names that better reflect the temperament of a girl.
In order to highlight the high-end sense of the name, the surname of one parent can be split. For example, Muzi is the result of splitting the character "Li"; another example is Gu Yue, which is the result of splitting the character "Hu". This kind of split surname will have more personality, be easier to write, and read more richly than one word.
Other situations:
Sometimes when the parents’ surnames are the same, or when the child’s gender is not suitable, you can choose a name with a homophonic surname. For example, for a daughter whose parents’ surname is Zhang Helin, naming Zhang Lin would be too masculine. Therefore, choosing the homophones Lin and Zero, or the similar words Yinling and Ling, can instantly add a feminine charm to the daughter’s name.