Since his constitution was not inherently strong, the area where the Fierce Spirit might truly excel was likely in its abilities.
After advancing to Disaster Level, Qin Shuang had two special abilities.
One of which was an ability all Fierce Spirits possessed, which did not require the use of a ring to utilize.
This ability was the Illusory Labyrinth.
It could disturb a person's senses, causing confusion in their spatial perception, and result in them getting lost as though in a labyrinth.
This ability also had another name, Ghost Hitting Wall!
Ghost Hitting Wall can be considered standard issue for every Fierce Spirit; those with weak inspirations would almost certainly meet their demise if they fell into it.
However, Qin Shuang's Illusory Labyrinth was stronger than that of an ordinary Fierce Spirit. He could remodel the Illusory Labyrinth, inducing some miraculous changes that could also affect regular superpower users.