What left Mo Wuji feeling especially envious was the rich immortal spiritual energy here: it contained a sort of natural dao energy. There definitely must have been a huge spirit gathering array with cumulated the immortal spiritual energy from the natural surroundings. This sort of environment was the best for cultivation. At least, this sort of environment would strongly complement immortal crystals; it would be much better than cultivating with immortal crystals solely.
Mo Wuji even thought that if he could stay in this immortal ruins for two months, he would very likely be able to advance from the early Golden Immortal Stage to the intermediate stage.
Regardless of how long Murong Xiangyu and co. were going to stay in this Sharphorn Immortal Ruins, Mo Wuji decided that he was definitely going to find a place to stay. Thereafter, it would be best if he could advance into the intermediate Golden Immortal Stage here.
