It was very likely that the so-called 'emperor's tomb' had not been established by the Supreme Emperor but modified by him based on a vast primeval relic. Such a speculation was not a secret among the three major forces of the Pangu Universe.
The primeval relic that the Supreme Emperor used as his mausoleum was most likely the largest of all, with the most secret treasures and the most advanced technology. It even involved the mysteries of the four-dimensional universe and was the final resting place for countless Pangu Clan members. Therefore, it was also known as the 'Divine Mausoleum'.
Naturally, a lot of marvelous weapons from the primeval era must've been sealed inside the mausoleum. The fully-armed fleet of the Pangu Clan, such as 'Kunlun', the most advanced starship of the Star Glory Federation, might have dozens or even hundreds of them.
