The Throat Crushing Grasp had accompanied Bai Xiaochun from Qi Condensation into Foundation Establishment. He had used it in the Luochen Mountains and the Fallen Sword World, and had perfected it to the finest degree. Although it was a divine ability that came with the first volume of the Undying Codex, as he had proceeded with his cultivation of the Undying Heavenly King, it had become more and more explosive.
It had taken some effort on his part to hold back from using it. Back in the Blood Wasteland, there had been too many people watching him, so even during critical moments, he had suppressed the urge to use it, or other things like Violet Qi Cauldron Summoning or his Human Controlling Grand Magic.