The practice didn't last long.

Li Mu stopped practicing when he felt that the improvement began to slow down as he practiced the Xiantian Skill and Zhenwu Boxing.

He realized that his previous quick progress had something to do with the practice before his rebirth. The way that the runic flames of immortality worked was somewhat similar to "reading files". After the "read files" after his rebirth, he had broken several martial arts bottlenecks and entered the ...