According to the traditional idea, should my brother inherit most of the family property?

First, he let it go through. If you don't share his knowledge, give it to him.

Second, tit-for-tat, every inch of land is contested. Tradition is tradition and law is law. Six houses, you and your brother have two, and grandparents will share them equally without a will. In other words, you two third generations each have three houses.