The Ancient Mystic Doctor

Wu Yuanfeng has remained ageless for five thousand years. To honor a promise to his good friend Xiao Gang, he helps Xiao Gang's granddaughter, Xiao Yuling, return to the Lin family, only to discover that the Lin family has deep ties to his own ancestors. Even more astonishingly, the Lin family isn't the only clan connected to him. Before he knows it, he's become the most powerful figure among the powerful.