So, the actual core of this dungeon is Stone, not the body that Qin Yu replaced. The real super-villain is also Stone, and it is Stone that Qin Yu has to deal with. In fact, the true climax of the mission will not arrive until many years later, when Stone, having killed more than a hundred people, will inevitably confront King Qin Yu. However, Qin Yu has employed a lateral tactic - first knock out those who forced Stone into becoming evil, then guide him back to the righteous path.
Though Golden House's original manufacturers routinely suppress violent Buddhists, at least they carry out the Buddhist principle of saving lives. Thus, Qin Yu had a moment of insight and chose this approach.
The electric lights were the job of her assistant. At her command, he had gone to the main power station and drummed up some electricity.
Then, she would nourish Stone with a large pot of chicken soup for the soul.