You Were Asked to Be a Killer, and You Tricked Tsunade?

Ling Feng traveled through Naruto and was born with a terminal pulse unable to refine chakra, and became a black market killer in the Land of Rain. But he has full levels of [Modern Meridian Science] and [Ancient Acupuncture]! Toxins that chakra can't fix? A silver needle pricks down, cuts the pulse and seals the acupoint, and the toxin is instantly locked in! A fatal injury that cannot be saved by gods? One set pushed the palace through blood and forcibly restored vitality! That day, he successfully rescued Haruno Kikyo, who was attacked by Sansho fish toxin. The miraculous medical skill with zero chakra consumption directly alarmed the medical master Senju Tsunade! "Impossible! How did he block the toxins without the Yang Escape Chakra?!" Facing the three ninja who came to the door for questioning, Lingfeng stabbed a silver needle out of the air. [Meridian truncation]! [Reverse flow of Qi and blood]! Neural Blockade! With just a slight twist, half of Tsunade's body went numb instantly, and her chakra shut down on the spot! Tsunade was shocked: "What kind of magical medical skill is this?!" Ling Feng (sneering): It's just some basic acupuncture point knowledge. "Please! As long as you are willing to come out of the mountain, my Thousand Hands clan is willing to treat you as a guest!" Ling Feng waved his hand: "If you don't go, you will be a dog for Konoha. How can you be happy in the black market?" Everyone: "..."