你好,我们见过吗?
Nǐhǎo, wǒmen jiàn guo ma?
Hello, have we met before?
你好,我叫王明。
Nǐhǎo, wǒ jiào Wáng Míng.
Hello, my name is Wang Ming.
你好。
Nǐhǎo.
Hello!