Chen did not just stop there. After inserting the needle, he lightly flicked the end of the needle to vibrate it. As the needle was just embedded at the right length and flicked with exactly the right amount of force, it mysteriously vibrated at a constant rate without stopping. Moving on to the next needle, Chen did the same thing again. But when the second needle was inserted and flicked, the two needles started resonating with each other! By the time he was done with the third needle, Luo's pale face was looking a lot better. Her eyes opened wide in surprise as she watched Chen skillfully inserted needle after needle and felt her pain going away. Xiangyu's mouth was open in awe. Both of them did not believe Chen when he said he knew acupuncture. But with just three needles, Chen turned their beliefs completely around!