Fantasy: Just after crossing over, the system gave me the power of an immortal emperor

[Fantasy, time travel, system, pretending to be a pig and eating a tiger...]
Ye Chen, who lived a good life on Blue Star, encountered a robber and was thrown into the river by him, and ended up traveling to Tianyuan Continent.
As soon as he traveled through time, the system gave him the cultivation of an immortal emperor, and from then on he began his life of playing badly...