Paris St Germain clinched its third successive French title with a 2-1 win over Montpellier on Saturday.
PSG defender David Luiz says it's not easy to get this far.
"It is never easy. So we try to do our best in every match. Sometimes it is possible, sometimes it is not. But I'm very happy to be part of this club and our philosophy to play football and try to win every match so I am very happy with this."
The win is the eighth in a row in the league for PSG this season.
Festivities following previous PSG victories have occasionally ended in violence, with serious clashes with riot police in 2013.
But the atmosphere on Saturday was relatively calm with police vans and officers deployed to keep the peace.
