Song Yan's current swordsmanship attainments were already extremely high. After studying for a while, he quickly brought the sword spell "Sleeve Universe" of the early stage Crimson Palace onto the panel.
Invested 31 years of life essence, and "Sleeve Universe" reached perfection.
Further invested 150 years of life essence, and "Sleeve Universe" underwent its first mutation, gaining the magic spell "Opening the Celestial Gate."
This spell conceals the sword qi to the utmost, and can only be used when reaching the extreme. It's as if the celestial gate within the "universe" of the sleeve opens, with the divine sword flying out, significantly enhancing power, but also consuming more sword qi.
Continued to invest 3015 years of life essence, and "Sleeve Universe" experienced two perfect mutations, yielding the spell "Sword Evil Demon Dragon."
