Ye Chen managed to hold off Longhun, and it was indeed a fair match.
That double-headed dragon was immensely destructive.
However, experience trumps youth, and the eight Elders weren't just for show. Their skills and experience shone through. After the double-headed dragon went on a killing spree for a while, they found a way to trap it with the Bagua, like a big net, slowly wearing it down, dissipating its malevolence, and gradually taking control.
Then they summoned the energy of heaven and earth for a rapid contraction, channeling the flames towards its body. Soon enough, it couldn't withstand the onslaught. With a roar, eight energy beams converged as one, like a sword piercing through it.
With a colossal boom, it was annihilated.