What was Ah Chou?
Ah Chou was just a man who had lost everything.
For the Ah Chou that was transformed by Earth Count, his parents were killed as part of the celestial heavens' plot against him. At that time, Earth Count's power prevented him from seeking revenge.
Ah Chou and Earth Count were two consciousnesses of the same life. Earth Count was restrained by rules, while Ah Chou wanted to break them. In the end, Ah Chou was beaten back to Youdu by Celestial Emperor. He was suppressed by Earth Count at Youdu's Jade Lock Pass, lonely and miserable.
Now, Qin Mu was also Ah Chou. They were similar—both appendages of the original bodies. Ah Chou was Earth Count's reincarnation, while he was Qin Fengqing's second consciousness, born from his baby body after he was sealed.
Ah Chou didn't have a soul of his own, and neither did he.