C3306 What's the Use of Numbers?

What's the use of numbers?

Boom!

Boundless sword qi erupted from within the Immortal Killing Sword Formation. It happened to be the moment when the attack of the four Chaos Saint Stage Qilins landed on the formation.

Initially, Hsiang Yang didn't think that he could activate the Sword Formation so quickly. However, the four of them were asking for their own death