I Rely on Elementary School Knowledge to Dominate the World of Immortality

I entered a book about cultivating immortals and became a handyman with no spiritual roots. I planned to just eat and die, until one day, I saw swordsman Zhang Jian shouting at a spiritual sword, three three makes eight, three three makes eight. I muttered helplessly, "three threes make nine." The sword actually broke free from his hand and flew in front of me. Senior Brother Zhang Jian was shocked.