ねずみ算式に増える

Nandai nimo watatte sōzoku tōki sarezu ni kita tochi wa, ko, mago, himago no dai hetoshoyūsha ga nezumizanshiki ni fuete shimai, uru ni urenai “shiozuke” no tochi ni naru.As for land that has not been registered for generations, the number of owners increases exponentially to generations of children, grandchildren and great-grandchildren, and it becomes "non-dealable" land that is difficult to sell even if the owners want to.