Following a drawing test at a studio in Élisabethville (modern-day Lubumbashi), Mulongoy honed his craft of painting nature scenes during the next several years.
[3] After a drawing test in Élisabethville (modern-day Lubumbashi), French immigrant Pierre Romain Desfosses recruited Mulongoy in 1947.
[2][4] Following Desfosses' death, the artists moved to the Académie des Beaux-Arts in Élisabethville where Mulongoy began teaching courses.
[2] Journalist Régine Kerzmann said Mulongoy's paintings show an "extreme delicacy and great refinement [that] reveal his mastery of shapes and colors.
"[3] Writer In Koli Jean Bofane said:[6] "Pilipili Mulongoy, for his part, knows how to affirm nature, not through shimmering hues but thanks to the confidence with which he applies colors and shapes.