If I, a death row inmate, am not to become a demon, am I to become a member of the Imperial Guard?

Transmigrating to a fantasy world, Zhou Yang becomes a minor official on the border of the Great Qian Dynasty. At the start, he stumbles upon a local bully's scheme and is imprisoned in a death row by the bully and the county magistrate, to be executed three days later. Fortunately, while in prison, he is adopted by the leader of the Heavenly Principle Sect and taught a cultivation technique. [You burn your lifespan to begin cultivating the Innate Yang-Slaying Technique.] [On the first day, you successfully cultivated the first half of the Innate Yang-Slaying Technique. This technique truly lives up to its reputation for rapid progress.] [In the seventeenth year, you cultivated the Innate Yang-Slaying Technique to a minor success, and even condensed a breath of innate true qi. You finally broke through the peak of Body Refinement, entering the Acquired Realm, becoming a master of the Hundred Battles Realm. However, your energy was insufficient, and you had no choice but to end your cultivation.] [You burn your lifespan to begin cultivating the Mighty Bull Demon Fist.] [Having mastered the Innate Yang-Slaying Technique, you cultivated the Mighty Bull Demon Fist with ease, mastering the incomplete version in just three days.] [In the tenth year, during your cultivation, you, with mediocre talent, finally had a flash of inspiration and seized the opportunity to deduce the complete Mighty Bull Demon Fist.] Afterwards, he escaped from death row with his adoptive father, but on his way back to the Heavenly Principle Sect, he was betrayed by his adoptive father and captured by the Imperial Guards. Facing questioning from the Imperial Guards, Zhou Yang stood firm with righteous indignation. "Those are my own brothers and sisters, my elders... I deserve extra pay!" From then on, the martial world gained a new filial son of the demonic path, while simultaneously losing several powerful figures in the demonic path! This book is also known as "If I, a death row inmate, don't become a demon, should I become an Imperial Guard?"