Lancelot's heart was still beating frantically. In this battle, he truly pulled out all the stops, holding nothing back. He was fortunate to have detected the fluctuations of the Teleportation Magic in advance and launched a preemptive attack while the enemy was unprepared. He then made his initial advantage snowball, never giving the enemy a chance to turn the tables, and in the end, seized on the fatal error made by the opponent due to their intent to retreat.
But in reality, Lancelot had expended a great deal. This was the first time he had gone all out since becoming a Spiritual Cultivator, and his control of power was far from perfect. If the fight had dragged on, he might have run out of True Qi and been unable to maintain his suppression over the enemy.