I Have a Sword That Can Kill Demons

Chen Qingjiang traveled through the Daqing Dynasty and became a young Taoist priest. He originally wanted to stay in the Taoist temple to grow vegetables and flowers. But he was forced to pay the price of eighty years of life in exchange for powerful power. The only way to replenish longevity is to kill demons and monsters. Therefore, Chen Qingjiang left the Taoist temple and traveled all over the world, just to accumulate a little more longevity. Until that day, he discovered that his power was not just for killing demons...