The Almighty Celestial Destroyer Formation- rumors say it was created by the Marquis of Xuanji, Zhu Hongwu. A compulsory course for the cultivators of the Great Zhou Empire’s Divine Martial Army, it gathers the mana of multiple low-level cultivators into a singular source of energy and infuses it into the body of the commanding general, thereby causing the commanding general’s strength to experience a qualitative leap.
The method is similar to how some sects raise Tao soldiers. They use special formations to unite the numerous sect members who practice the same Tao technique as one. As long as there were enough low cultivation level disciples, upon activation of the formation, they could take on opponents with much higher cultivation levels than them but with fewer numbers.