This was a cultivation technique that made use of pure will. It did not bring any increments of strength and was only intended for cultivating Fang Xingjian's will to an indestructible level, even to the extent of allowing him to traverse space-time.
Any living creature in the multivariate universe would probably break down and dissipate immediately, finding it hard to hold on. However, it was clearly not the case for Fang Xingjian. His will's tenacity had clearly surpassed all living creatures' imaginations due to the background of his blood lineage, the stimulation from the experiences he had gone through, and the nurturing from his martial arts cultivation. His strong obsessiveness to live on also let him keep on surviving till now.