Actually, after defeating Chen Liao, the Gatekeeper had very little Spiritual Energy left to use. The amount of Spiritual Energy that a Fourth Turn Level Transcendent can use is limited. Even after exchanging for various complete versions of awakened spells, and even with the power of the Five Intense Flame Beads strengthening his spells and reducing energy loss, the Gatekeeper's Spiritual Energy was depleted under his barrage of indiscriminate, map-leveling attacks.
In the previous two hundred or so playthroughs, Ren Suo always tried to reduce the number of enemies he faced simultaneously in this global battle by using dialogue tactics and the empty fort strategy. He divided the enemies into three batches and defeated them one by one.
However, Ren Suo eventually found that the Gatekeeper's Spiritual Energy was never enough. Even if he was extremely cautious and utilized the Bead Rotation Matrix to its limits, it still couldn't compensate for the loss of Spiritual Energy.
