There was a Ward against movements by any being made of flesh and soul engrained inside the Supreme Sun. So it would not matter how strong you were; without breaking this Ward, it was impossible for anyone to reach the core of the realm and find the Supreme Tower, and there was only a single road that could be used to get to the core.
The Supreme Sun's first line of defense was simple yet incredibly profound, and it has stopped many intruders from entering the realm over the ages.
This Ward was fueled by a series of Proto-Source level treasures crafted by the Supreme Magus, and it had stood the rest of time, but Andar had studied it for a while and devised a simple method to defeat it.
