Li Zhengjing, seventeen years old, has reached the peak of his external cultivation. His identity: an outer disciple of the Yuhua Xianzong's Guyue Peak and the second son of the Jian'an Marquis. His hidden identity: the 763rd backup body of the Thousand Illusionary Monarch. His fortune: He cultivates the Zangfu Yangqi Neigong (a flawed and incomplete version), failing to cultivate inner energy and damaging his internal organs. Seven days later, he will fail the inner disciple assessment, be abandoned by the Thousand Illusionary Monarch, refined into a blood pill, and die a horrible death! The method to change his fate is as follows: ... "I, Li Zhengjing, am clearly a proper disciple of the Xianzong, why the hell did I become a backup body?" ... This book is also known as "Oops! I Became a Substitute!", "A Proper Person's Cultivation Journey", "A Proper Person's Cultivation, Who Pays for It?", etc...