MTL-I traveled through time and space, and I exchanged my life for krypton

Synopsis

I traveled to the immortal world, but found myself in an old body. My life span is about to end, but fortunately I can exchange my life by krypton level. I retreated from the eighth level of Qi Refining to the seventh level of Qi Refining in exchange for ten years of life. Although my realm has retreated, I am proficient in magic and my strength has not decreased. The evil disciple is unfilial and colludes with foreign thieves...