Traveling through the era of spiritual recovery, Jiang Cheng became an intern teacher in an ordinary middle school. Before he knew the situation, he was called to the office by the school leader and asked him to write a set of fitness manuals suitable for all primary and middle school students? Jiang Cheng wanted to refuse, but the system activated at a critical moment. [Option 1: Reject the request of the school leader face to face, and put up the middle finger, scold him a big bang, reward: a pair of limited edition pure gold wheelchairs! 】 [Option 2: Agree to the request of the school leader, obtain century-old skills, peerless roots, master-level comprehension ability, and the Nine Yin Manual (full version)! 】 ... School leader: "You were asked to write a set of physical fitness manuals for elementary and middle school students, but you actually compiled the ceiling of martial arts for all?" Ministry of Education: "In just over 300 pages, it actually integrates internal strength, lightness work, healing, acupressure, fist, palm, leg, claw, finger and many other top martial arts. I love this [Nine Yin Manual]!" Yenching University: "Mr. Jiang, can you spare some time to help our school write a set of exercises suitable for mixed cultivation of men and women?" "No problem, [Jade Heart Sutra] will be arranged!"