After Li Yi entered the Wuji Palace, he used the Heaven and Earth Qi Gathering Technique to gather the spiritual energy from hundreds of miles around. Inhaling and exhaling, he further refined the golden energy within with twelve strands of Heart Fire Qi, absorbing it into his lung acupoint.
After borrowing the power of Incense Fire Belief, the spells he cast became extremely powerful, almost absurdly so. Moreover, even though he held the position of State Preceptor and was within the Imperial Palace, the suppression of the Emperor's Aura didn't greatly affect his cultivation.
Just in a moment.
The palace where he resided seemed like a massive furnace, with Red Cloud Qi pervading the surroundings. Although there was no visible fire, being within it felt like being in a sea of fire.
Whether it was the Jinyi Guard or the Golden Eyes Guard, they simply couldn't approach this palace.
