Tukhla keep on observing the Thee Devils of Han while the crowd is watching intently at the battle.
The Crippled Devil not sensing that he is being observed was actually sweating right now. The voice that he heard was like the Sword Immortal was beside him whispering words into his ears. He looks back and through the gaps of the door, he could see that the Sword Immortal is looking at him.
He calms himself down and thought to himself
He once heard that grandmaster level could use their internal; energy to manipulate sounds and send their words to people far away without anyone none the wiser.
It is the so called Silent communication between master.
Han Xiao quickly went into the hut as he tends to Azief needs as he told about the people that come here and their martial arts school.