五六 (wǔliù): five or six

Meanings

Wǒ děng le wǔliù fēnzhōng.

I waited five or six minutes.

Jiàoshì lǐ yǒu wǔliù gè xuéshēng.

There are five or six students in the classroom.

grammar

Placing two consecutive numbers together (五六, 三四, 七八) is a common Chinese way to express an approximate quantity, equivalent to 'about five or six.'

五 wǔ

六 liù