It was not easy to train in the Three Thousand Great Daos. They were vast and profound, able to ascend to the Deity level if one was proficient in one.
It was easy to destroy the stars if one became proficient in the Grand Dao. Ye Hongtian, an outer disciple of the Black Heaven Martial Palace, had his meridians blocked since young, so it was hard for him to cultivate. However, he had obtained an unknown inheritance by chance and obtained a cultivation system that allowed him to comprehend ten thousand techniques and cultivate three thousand great daos.