Pray to the Lucky Koi to Learn Fortune and Misfortune; Every Cause and Effect Is Earned

In my previous life, my best friend and I went to the Lantern Festival. I bought a little koi fish, and from then on, everything went my way: my house was demolished for redevelopment, I won the lottery, and I got promoted with a raise. My mother's cancer went into remission, and I even married Zhou Yan, a top-tier rich heir. Meanwhile, my best friend Lin Jiao lost her job, and even the man she liked confessed his feelings to me. In the end, she could barely make a living by becoming a suggestive livestreamer. But on my wedding day, she poisoned the food. I watched Zhou Yan die before my eyes, then Lin Jiao rushed out and stabbed me through the heart. "Why is it that you get to rely on that little koi fish..."