PSG reduced their points gap to three with Lille after thrashing Strasbourg.
Kylian Mbappe, who ran the show against Bayern Munich a few days ago, picked up where he left off, providing an early lead before Pablo Sarabia and Moise Kean added to the tally in the first 45 minutes of the game.
Sahi pulled one back for the hosts around the half-hour mark, but PSG put the game to bed once and for all after Leandro Paredes scored a stunning free-kick to make it 4-1.
Mauricio Pochettino enjoyed one of the best-attacking games since he took over as PSG boss, and the Argentine would be pleased with the result.
Les Parisiens faced more criticism after their lacklustre defeat to current table leaders Lille last week. Still, they responded well by outplaying Bayern Munich in the Champions League quarter-finals earlier this week. Now, Paris-Saint Germain built on that impressive win to thrash fourteenth-placed Strasbourg. They also eased the absence of Neymar, who missed the game due to the red card he received in the defeat against Lille.
Mbappe netted a brace in the win against Bayern and a hat-trick against Barcelona in the previous round, which showed his red-hot form. Now, he is also topping the scoring charts in Ligue 1 with 21 goals.
PSG have reduced their gap with leaders Lille to three points and will face Bayern in the second leg next week.
Pochettino’s debut season as Les Parisiens gaffer has lacked conviction so far, but the wins against giants like Barca and Bayern show that he can’t be taken for granted either.