Mortal: I Have a Strengthening Furnace

[Multiple female protagonists, fan fiction, mortal flow, steady cultivation of immortality] Fang Qing traveled to the world of mortals cultivating immortals and became a young Qi-refining monk in Lanzhou, Yue State. Although his talent is mediocre, he comes with an enhanced divine furnace, and his magic weapons and elixirs can be enhanced and upgraded...