The elders atop the city walls started to tremble in fear after feeling the great momentum the enemy had while charging at them.
The First Elder turned towards the multiple groups of soldiers behind and shouted: "Start operating the formations! They are coming at us! Go! Go!"
The soldiers and disciples were still a bit lost on how things were developing, but they obeyed the First Elder orders, infusing their energy in the formation they were responsible for. In less than thirty seconds the whole environment got at least thirty degrees hotter.
Their energies started to get sucked by many circuits drawn on the ground, flowing towards huge pillars that were stationed in front of each group. Those pillars were made of blue Skystones and were able to hold up a huge amount of Qi inside of them. If they were made of red Skystones, they would be able to store Mana instead, but the huge quantity of resources to build something like that was astronomical.