Immortal Heritage Continent

Thousands of years ago, the great emperor Yun Qingyang unified the Immortal Heritage Continent and changed its name to Tianlan. Thousands of years later, a royal prince and his servant embarked on a journey to cultivate immortality. Where have all the immortals gone from ancient times? Do immortals exist? What secrets are hidden in this continent? Everything kicked off on this continent surrounded by the endless sea.