They beat Lyon after a first half with two goals from Mbappe including a very early goal to open the match. Lyon only managed to get one goal in the second half that is not enough for them to come back and get a point from PSG.
This big win again shows the importance of Mbappe with PSG and how PSG depends on Mbappe to find goals. Asensio scored one goal for PSG too and he will be a promising player for them in this season by his readiness to cooperate very well with other team-mates as well as don't refuse to play proactively defensive when required by a coach.
It's true that Mbappe is a very important player for PSG, and I think that if he went to Real this summer, PSG's attack would be very weak now, and when Mbappe are on the field, it seems that the team is playing better. Lyon started this season terribly, and by the way, Lance also surprised me very much, for the 4 rounds 1 point and 10 goals conceded.