Name Act Article 3

Chinese-language names shall take the following form:1. Surname first, given name second; should an applicant not have a surname, a given name may be registered.2. No space or symbol may be put between the surname and the given name.
中文原文 姓名條例第3條
取用中文姓名,應依下列方式為之:
一、姓氏在前,名字在後。
但無姓氏者,得登記名字。
二、中文姓氏與名字之間不得以空格或符號區隔。

English translation for reference only; the Chinese text prevails. Not legal advice.