Just like now, between Wang Tao and the Fire Beast.
Wang Tao's [Infinite Karma Fire] was obviously much stronger, controlling more fire elements, which caused the Fire Beast's [Fire] to control fewer fire elements, making it impossible to unleash its full strength.
Moreover, Wang Tao's [Infinite Karma Fire] covered a vast area, directly enveloping the entire [Fire] like a cage, isolating the Fire Beast from external perception, making it very difficult for the Fire Beast to absorb and control fire elements outside.
However, these weren't actually the most critical factors because fire elements are something Wang Tao couldn't completely control or completely isolate the Fire Beast from. The Fire Beast could still resist.
But the problem was that Wang Tao's Fire Law Affinity was extremely high!