The path to Breaking Limit, whether it's the Qi Blood Rushing Method, Life and Death Skill, or Reserve Power Breaking Method, can actually be divided into two categories.
One is Water Drops Stone.
The other is unreasonable.
The Qi Blood Rushing Method is representative of the Water Drops Stone approach.
This path is the most balanced and even-keeled, emphasizing gradual progress, either whittling down with time or spending money to buy secret medicine to replenish qi and blood.
In contrast, the Life and Death Skill is the most extreme, gaining great enlightenment between life and death. Although it has a high mortality rate, it is said that someone used this method to breakthrough three limits within a month, making breakthroughs as easy as drinking water and eating meals—it's utterly unreasonable.
Some say this is a heretical secret technique inherited from the Pile Skill.