Lin Li did not really put it to heart when he first agreed to Edmund's request that he would help the Illuminati speed up Aquilo's resurrection after he mastered the mageweath that was on the seven monuments. It was not because Lin Li thought lowly of the promise, but because he was not sure when he would be able to master the mageweath. After all, it was a divine-level mageweath, and Lin Li was a busy man. It would not make sense for him to devote all his time and energy to the study.
However, the suspense that Aquilo's hologram created convinced Lin Li that he had to start considering how much energy to devote to the study of the mageweath. He knew that the earlier he could master the mageweath and resurrect Aquilo, the earlier he would be able to hear him speak about the Immortal King.