Now that Sunny has actually become a very advanced backbender thanks to his intense training with Wucro, his uncle Shen can teach him secret techniques from the next level of contortion knowledge!
Actually, there is much more to Sunny's uncle Shen than meets the eye: He may look like a monkey in his prime, but in reality, Shen isn't Sunny's biological uncle. More like, his great great great great great grandfather. Shen is a master of Kung Fu, Daoism, Chinese Medicine, Feng Shui, and many other disciplines, and is over one thousand years old. Immortality is only one of the many secrets he has uncovered over his many years of adventuring in China. Now, in our time, his days of being a wuxia hero and legendary "sage" are over, and he spends his time drinking tea, travelling the world, keeping his body in shape, and sharing his teachings to the descendants of his family, especially Sunny!