I Am Determined to Slay Demons for Three Hundred Years

I, Shen Zhi'an, swear here that in this life I will definitely slay demons when I see them, and eliminate evil when I see them! There are endless demons in the world, and I, Shen Zhi'an, will never be able to enter reincarnation or be promoted to the rank of immortal! If you die, God will not take you away! No land left! The remaining soul still kills the demon dog!