This alliance was made up of reclusive characters akin to Matriarch Ji. They and their disciples joined together and decided to form a sect. The strength of their alliance didn't lose out to the first alliance formed by the three great peak powers of the north.
They named themselves as the Chaotic Sky Sect, this name just so coincided with the current chaotic era. They couldn't help but to form an alliance to avoid being absorbed or destroyed. Right now, the situation in the immortal realms was like this. Even for peak powers, they didn't have absolute confidence to stand stably if they had no alliance. Through these years, many peak powers had declined and was destroyed, disappearing from the central stage of the immortal realms. The clearest examples were from the eastern regions. Almost all of the peak powers then had fallen.