Ci si intende abbastanza bene

In lesson 14.1 Roberto says "ci si intende abbastanza bene". I don't understand why he is using ci. It's before the verb so I assume it's a pronoun but what does it refer to?

I thought I'd take a shot at answering my own question. The verb is intendersi, so we get along with ourselves would be si (meaning one/we) si (reflexsive pronoun) intende (3rd person singular verb) or si si intende. But when you have si si the first si becomes ci and we get "ci si intende". Let's see what the Rocket folks say.

Ciao Maycha, I apologize for the delay in my reply. The verb "intendersi" is the reflexive form present indicative of the verb "intendere" and it means "to get on". The word "ci" is called particella pronominale in Italian and it may have different meanings. In the sentence "ci si intende abbastanza bene" , "ci" is translated as "each other". Therefore the sentence will be translated literally as "we get on each other". I hope this helps. Buon divertimento. Ciao