Burn

Chu Li evaded their attacks as he measured the two's channeling route.

The secret skill of the duo was quite domineering. Chu Li saw a fire burning wildly within them – burning their flesh, blood, vital essence, and life. This fire was growing bigger. 

The duo's techniques were gaining speed as if only their impurities were burning off, making them swift and energized, from a wild boar to a wild panther.

Their technique was fast, as though they were Chu Li's garments that couldn't be shaken off.

Prince Bao and Lu Yurong were watching on the sidelines, without the thought of butting in.

This duo's technique was too fast for the naked eye to capture and so was Chu Li's. If it were them, they would not have been able to dodge over a couple rounds.