Many nobles and wealthy cultivators used drugs to strengthen the structure of their seas of consciousness since their lofty lifestyles prevented it from happening naturally.
Enduring and overcoming struggles were the best methods that cultivators had to improve the sturdiness of their mental spheres.
Still, that usually conflicted with their habit of secluding themselves to focus on absorbing "Breath".
That approach was only natural since the ranks of the mental spheres didn't have stages or tiers, which didn't allow them to express clear signs of their might unless they reached the next level.
The body was usually the easiest to train, and the dantian would boost one's battle prowess by a lot with every breakthrough.
Cultivators would obviously focus on them.
Noah had always been different in that field due to the advantage provided by his transmigration.