Travel Through the Prehistoric Times, and You Will Be Rewarded with the Method of Covering the Sky at the Beginning

Jiang Chen traveled through time and became the elder brother of Fairy Sanxiao in the prehistoric world. In order to prevent Jie Jiao from being destroyed, Jiang Chen practiced desperately. At this time, the system awakened and rewarded Huangtian's other-transformation freedom method and Zhetian's human body secret realm system. So he finally cultivated to the great path, making Jiejiao the only sect in the world.