Each of the twelve metal beasts wasn't very strong, so Zhao Hai didn't use them often. He would only use them in group battles.
However, the twelve metal beasts were different this time. The twelve metal beasts contained the power of faith. Although Zhao Hai had never seen them fight, the aura of the twelve metal beasts had undergone a tremendous change.
If the twelve metal beasts in the past were just twelve inanimate objects, the twelve metal beasts now seemed to have become alive. Moreover, judging from their appearance, the twelve metal beasts 'strength was around the nascent Soul Stage.
And this was only based on their appearance. One had to know that the twelve metal beasts could transform. In addition, they were separated from liquid silver and would not be damaged. Their combat power must be stronger.
Most importantly, Zhao Hai saw a glimmer of hope from the twelve metal beasts. It was the hope of the yin-yang star myriad transformation technique.