Yanni did not have the chance to react at all and spat out a few mouthfuls of blood.
Perhaps it was because Connor's speed was too fast, so before he could recover, all of this had already happened. Everyone could only hear a series of loud bangs.
Even though Rockefeller's people had used technology to slow down the speed by a thousand times, they still couldn't see it clearly. They could only see afterimages.
In the beginning, Yanni could barely use his blood Chi to block Connor's fists, but later on, Connor's speed was too fast, and he couldn't use his blood Chi at all. He could only use his own body to forcefully receive Connor's attacks.
Yanni's body was constantly changing positions in the sky. It wasn't that Yanni was dodging Connor's attacks, but that he was being beaten from one place to another, not giving Yanni any chance to adjust his body or land on the ground.