After that.
Su Ming'an stood on the high platform.
Even though the thousand-year plan has feasibility, most timelines have already been polluted by the shadows. What Su Ming'an and the deities are currently doing is just the first step, which is—dividing the pervasive shadow pollution into ten thousand portions. This makes the pollution in each portion so small that it cannot completely cover the world.
Divide and conquer.
The next thing he had to do was to unravel these ten thousand portions of shadow pollution, bit by bit—meaning he would have to delve into ten thousand epochs and completely strip away the shadow's pollution in each. Of course, this workload was too vast for one person.
The deities, in splitting the ten thousand epochs, have separated the current era—the 0th year of the Heavenly Era. This is reflected on a spatial level as the region of the Holy City where the Old God resides.