Infinite Derivation

In this society with an extremely aging population, it is a crime to be single for more than 25 years, not to mention Xu Xianhao, a great magician. "Xu Xianhao, you are now sentenced to death for disrupting social security management and threatening national security." The great magician Xu Xianhao had an ashen face. He had been obsessed with academics all his life, determined to inherit the ancestral craftsmanship, and studied calculus and derivation all his life, but he had no time for blind dates, which led to such bad consequences. "In the next life, I will never ask for guidance or be a magician again!!!"