Yang Qing's spar with the starlight crab went as expected, which was a proper one-and-a-half-hour thrashing of the poor creature. But despite the one-sided beating, it proved to be a worthwhile endeavor for both parties.
As the trainer, Yang Qing refined his control over his spells and techniques, taking great care to deliver just the right amount of force to ensure the starlight crab could hold out longer. At the same time, he deepened his understanding of his abilities, especially with the Brilliant Ray Fist Art.
Though he was the art's creator—and therefore had a perfected-level mastery of it—Yang Qing still needed to reattune his body and mind to it, given its recent elevation from a low-tier to a mid-tier blue-grade technique.
The spar helped him do just that.