Ken channeled his Qi into the three completed formations as he worked on the fourth one. Luckily, the central formation was complete and stable as it was, so he didn't need to invest extra effort to maintain it as well.
'Can this kid really succeed?' The voice pondered inwardly as it watched Ken and awaited him to falter and fail. It knew it couldn't talk while Ken was already multitasking.
Condensing the fifth-grade Red Moonstone gem into essence, he guided it to where the southern formation was meant to be constructed. His core churned as it brought out a large amount of Qi to support so many activities simultaneously, and luckily, Ken's core was powerful enough.
He drew the large runes without a break until he was finally done, and eventually, the formation was completed. Standing in the center, he felt a strong sense of satisfaction wash over him as he looked at the complicated formations interwoven one into another.