Lifespan to Cultivate Immortality? It's Simple, Isn't It Just Stud?

Multiple heroines+Gou+Not the Holy Mother Life is not long, just stud! Play it safe and risk everything. Chen Xiangyang accidentally traveled to the world of immortality and obtained a system that uses his own lifespan to enhance items. "It took eighty years to strengthen a low-grade magic weapon? Earn money with blood!" "A hundred years to replace it with the Instant Foundation Establishment Pill? You're guaranteed to make a profit without losing anything!" "A technique that takes a thousand years to strengthen? Just stud it!"