Ning 10x Effectiveness again

The Azure Skysnake King swam back. All it could do was raise its head towards the sky and roar in dissatisfaction. Over the course of its life, it had met multiple Xiantian level humans who had reached the ‘one with the world’ level, but it had still beaten the snot out of those humans…but that youngster with the twin swords he had just faced used those two swords as though they were wielded by two separate people who were perfectly linked in their thoughts. Indeed, the threat posed by those twin swords was ten times greater than normal.

Book 2, Chapter 15