If You Are Asked to Cultivate Immortality, You Will Open a Harem?

[Emperor + Harem + Invincible + Shuangwen + System] After traveling to this world, Liu Mang quelled civil strife, killed foreign enemies, ascended the throne and proclaimed himself emperor, and finally created a prosperous world. Until thirty years after becoming emperor [Ding, the system is activated, the host has been bound to the National Fortune Cultivation System] [Detecting that the host's national destiny is strong, he immediately improves the host's realm] Liu Mang looked at his old face in the bronze mirror with a smile on his lips. From then on, civil strife was suppressed, foreign enemies were conquered, sects were conquered, and aristocratic families were destroyed, until a legend of the Immortal Emperor was achieved.