How do you mustache in Chinese?

In Chinese, the Word for "mustache" is "胡子" (húzi) when referring to facial hair in general. If you specifically want to say "mustache," you can use "小胡子" (xiǎo húzi), which means "small mustache." To ask someone about their mustache, you might say, "你有小胡子吗?" (Nǐ yǒu xiǎo húzi ma?), meaning "Do you have a mustache?"