After Jumping into the River, I Became an Underground Overlord

After the young man jumped into the river, he was forced into the river and lake. Starting from the beaten Ma Zai, he used blood to open the way, and finally fought his way out of no return in the gap between black and white! From then on, he counterattacked all the way and swept the entire field. Let's see how I can change my fate against the odds and reach the top!