How Did Our Close Friendship Turn Sour?

In their previous lives, the brothers Shen Shisan and Tang Chi had shared life and death. After being hunted, they fell into an abyss, and a small piece of their souls inexplicably went missing. Shen Shisan unexpectedly found the reincarnation of Tang Chi's fragmentary soul, now named Cang Ming. He discovered that his own fragmentary soul had also reincarnated as Cang Ming's older brother, Cang Lang, and had repeatedly persecuted Cang Ming. After saving Cang Ming time and again, Shen Shisan realized that he was nothing like Tang Chi...