Kylian Mbappe became the first Paris Saint-Germain player to score five goals in one match.
Mbappé, who scored a hat-trick in France’s defeat to Argentina in the World Cup final just over a month ago, scored a first-half hat-trick here as PSG led 4-0 at half-time against their Regionalliga rivals.
He has scored twice more since the restart, with Neymar and Carlos Soler scoring PSG’s other goals in their last 32 matches.
The Qatar-owned club, which has won the French Cup 14 times, more than any other side, will now play bitter rivals Marseille away from home in their last 16 matches early next month.
This match is scheduled for the week starting February 6, just a week before PSG host Bayern Munich in the first leg of the Champions League round of 16.
“As soon as we scored the first goal, it became harder for our opponents,” PSG boss Christophe Galtier told reporters.
“The opponents we will face in the coming weeks are of a different quality,” he added.
Mbappe received the captain’s armband while Neymar also started, but Lionel Messi rested, he was allowed to miss this draw, played to a sell-out at the 38,000-seat Stade Bollaert-Delelis in Lens.
The Pays de Cassel are a tiny club representing a handful of villages away from the port city of Dunkirk in the far north of France, but their outstanding entry to this stage of the tournament has sparked the interest of the entire region.
They performed well in the early stages against Ligue 1 leaders, but their resistance was broken just before the half-hour mark when Mbappe spun in a Nuno Mendez cut and the ball deflected heavily on its way to goal.
Mbappé then set up Neymar for the Brazilian to score his first post-World Cup goal before the French star scored his team’s third and then completed a 12-minute hat-trick off Vitigny’s assist.
Mbappé’s fourth and PSG’s fifth followed a goalkeeper error in the 56th minute.
Neymar forced Soler to come back 6-0 before Mbappe completed the rout, his fifth game of the game setting him the record for most Coupe de France goals.
So far, he has scored 29 goals in competition, the same number as former Marseille great Jean-Pierre Papin.
how / ivd