I Picked up the Coffin of the Immortal Emperor and Hatched a Mythical Beast

Chen Xuan traveled to the world of cultivating immortals. He had mediocre qualifications and thought he would do nothing. Unexpectedly, he was bound to the [Wanjie Sign-in System] and was forced to sign in at the beginning of the game to an abandoned "Immortal Emperor Cemetery". He carefully dug out a simple stone coffin deep in the cemetery. What lay in the coffin was not the bones of the Immortal Emperor, but a beautiful girl who had been sleeping for thousands of years!