Armored Warrior: the Strongest Nether Demon at the Beginning

Lu Chen traveled through the armor world, became the son of the villain Lu Fa, and awakened the killing system. Just kill and you will become stronger! "Five hundred meters ahead, I found a lone demonic bull beast!" Don't say anything, just do it! [Ding, congratulations to the host for killing the C-level Life Demonic Bull Beast. The reward is negative energy*20 cubes, free attribute points*20, and triggering a special reward: the power of the wild cow! [Ding, congratulations to the host for successfully being promoted to a C-level life form! I see! Lu Chen seemed to realize that a door to a new world was opening towards him...