This is the 349th most frequent Chinese word.
刘
A Chinese surname, typically romanized as "Liu."
Here, '刘' is a surname, which is commonly used in Mandarin names to address or refer to individuals with politeness.
我刚刚见到了刘先生,他是我的老朋友。
I just saw Mr. Liu; he is an old friend of mine.
In this sentence, '刘' functions as a surname, paired with a title, '校长' (principal), providing specific identification.
刘校长将在学生大会上讲话。
Principal Liu will speak at the student assembly.
'刘' here is used in a descriptive manner to indicate a style or recipe associated with the name Liu.