Even if they get the spells, they won't be able to use them because of their lacking internal energy. It is a sort of handicap for cultivation families.
Loose cultivators and family cultivators only have life energy and their body to rely in for power. This gives them a handicap compared to the people from sects.
With these kind of deficit, there is just no way they cultivators from families match the people of the sect in terms of power and skill. But there are other things that they are lacking compared to sects, such as pills and high-quality weapons.
Then there are people of the Blood Skull sect who not only cultivate both paths but also combine the power of both paths to double their power. For the Milton family, the Blood Skull sect is a no-go area.
