Fantasy: the Engagement Was Canceled at the Beginning, but I Counterattacked and Killed Everyone!

Wu Yubai traveled through another world. But he faced the dilemma of poor qualifications and low cultivation. Unexpectedly, when his fiancée broke off the engagement, he awakened the most powerful experience system. Then, the backhand subdued the audience. Fiancée: I was wrong, I regret it, and I won't break off the engagement. Wu Yubai: Your qualifications are too poor and your cultivation is too low to be worthy of me. To improve your cultivation level, I have a cultivation level card to upgrade with one click. When practicing the exercises, I have skill cards and I can understand them instantly. When fighting with people, I have character cards, and I can choose from the big guys from all over the world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.