Lin Wu continued to read and got to learn more about the reality.
The invaders were winning for the most part due to their overall superiority and advanced skills, but that was until the three clans gained control of the beacons and awakened the guardian beasts.
That was also why the invaders didn't resist as much, even if they had the power to. They simply didn't want to deal with the four guardian beasts.
There was specifically written that the Leader of the Thirteenth Thunder Chamber cursed to no end when he found out there were already beacons of the guardian beasts here.
He swore to kill seven generations of whoever it was that spread the rumor about the Ming Dao world being free from the influence of the Four Guardian beasts.