Fantasy

After mistakenly contributing all of his attribute points to the drop rate, Xiao Shi found that every time he killed, he would get an item.
    Slapping a mosquito to death, drop a pill.
    Killing an evil spirit, drop a secret book.
    Slashing a martial artist to death, drop the opponent's cultivation tips.
    ....
    When killing, Xiao Shi was shocked... "How did I become invincible?"