Be a babysitter from Douluo Continent

Introduction: A dead traveler who just saved the world, successfully reincarnated in Douluo as Tang San's half-sister with the same father and mother under the interference of unknown existence.However, under the interference of the system, an ancient immortal-level primordial spirit can't snatch the soul of a mortal who doesn't even have the artistic conception of martial arts.So Tang Nianyin, who was gorgeous and turned into a woman, yelled in his heart, "Father fighting!" Book shortage!Happy to write it myself.