Even without mentioning that they were already weeded out and unsuited for martial arts training, even if they did have the aptitude, the Wei Family's heritage had been severed, leaving them with no way to start practicing martial arts at all.
Furthermore, their enemy was currently the most powerful figure in the Martial Dao World.
Their patriarch hadn't been a match even after over a hundred years of cultivation, let alone them. The thought hadn't even crossed their minds; their only idea was to leave the Martial Dao World and live out the rest of their lives in peace.
Chapter 257