Sky Tower was a gigantic structure made from advanced composite materials. Its height surpassed the largest things ordinary civilizations could build—over thirty kilometers tall. For a building, that was utterly astonishing. If its builders had not been giants but creatures roughly human-sized, then that height was even more unbelievable.
Of course, we had built plenty of colossal things: planetary ecological controllers several kilometers tall, warships over ten kilometers long, heavy carriers dozens or even hundreds of kilometers long, even Planetary Fortresses, and more insane military monstrosities such as the Psionic Death Star. Each one was more exaggerated in size than the last, to the point where describing them by size alone was difficult. The last time the Psionic Death Star ejected Star Crown matter, it reached a height of over a thousand kilometers. But we had never built any single building quite so absurdly large, because there was no need. As a structure on a planet's surface, a height of several dozen kilometers was both unnecessary and a waste of energy, and it would be easily targeted by heavy firepower.
No one knew why Sky Tower's builders had constructed such an enormous tower, nor what level of civilization they had reached. What surprised me was that when Sandora scanned Sky Tower, she detected an energy barrier inside it. Its strength was enough to interfere with some of Sandora's radar systems. Of course, breaking through such a barrier would be easy for a Shilin Emperor, but Sandora was worried that forcibly destroying it might activate some sensitive equipment within Sky Tower, so she did not act rashly for the moment.
"There's an entrance at the base of the tower. But it looks like we'll have to deal with some..." Sandora pointed toward the distant foot of the tower, but her words