With a Billion-Fold Rebate from the Auction, I Became the Emperor of the Human Race

Lin Yi traveled to another world and became the young patriarch of the Lin family. Accidentally bound to the billion-fold rebate auction system, as long as the items are auctioned, they will be returned at a minimum of ten times and a maximum of billions of times. Congratulations on your auction of the second-level low-grade mental method "Qingshui Jue", triggering a billion-fold critical hit, and rebate the god-level mental method "Tao Te Ching"! Congratulations on your auction of the fourth-level elixir "Recovery Pill", triggering a billion-fold critical hit, and rebate the god-level elixir "Nine Turns of Resurrection Pill"! As Lin Yi continued to auction and improve his strength, it wasn't until one day when aliens came that Lin Yi realized that he was invincible...