It is a continuation of the book entitled: "Nande customary law in the face of the evolution of the Congolese land tenure system". This is a reflection by the author of the way in which the Nande administered and managed their land rights before the arrival of colonisation. The customary authority of four Mundande chiefdoms took the opportunity to explain each aspect in all entities. In order to popularize his notions, the author, after having taken up each concept, makes it available to the public. In the second part, the challenges faced by the peace courts called upon to settle conflicts at the level of customary law are presented. The method adopted by the courts to deal with the numerous cases (90%) that arise in the Nande territory is indicated. Case law elements are included to show how the Nande react to the new concept and procedures.