But there may be some changes in the description of this case.
1 Your parents and children should be registered in rural areas, so your eldest brother's self-built house and a large sum of money donated by your father to his son should be regarded as the personal property of your eldest brother and his son.
Your second brother's father gave him a small property of 54 square meters. If the house has a real estate license, if the real estate license is your father's name, congratulations. A 54-square-meter house also belongs to the inheritance scope, and you can also get a share. The house in the countryside has no certificate, and your second brother hasn't stamped it. If the right to use the homestead and the right to examine and approve the building belong to your father, congratulations. A 54-square-meter house is also an inheritance, and you can inherit one third.
I suggest you discuss it with your eldest brother and second brother, and don't earn it from you. Since everyone has a place to live, if we go to court, it will definitely be one third.
There is no connection between hukou and inheritance.