I Only Want to Cultivate Immortality, but the System Gave Me a Beast-Taming Journal

Wu Tian transmigrates to another world, where he is supposed to open a teahouse.

He wants to live a peaceful life, but then he receives a mission from the System!

He tames a white tiger, is then appointed city commandant in a moment of crisis, and starts building a beast-taming base!

Before long, the ancestors of the great sects are bringing him their most beautiful female disciples, begging him to become the Immortal Emperor!