My Mental State Has Completely Collapsed

The more you put up with something, the angrier you get. The more you back down, the more you feel cheated. Since life never goes exactly your way, why not just open your heart and live without holding back? Anyone with a heart condition, stand back. I’m about to flip the table! After getting the System, Tang Niu had planned to keep a low profile, train in martial arts, and break through the limits of humanity. But it turned out his System was broken. It had serious problems, and many of its functions produced the opposite effect. Helpless, Tang Niu could only grow stronger while his sanity repeatedly fell apart.