I recommend the novel " The Agent of Tribulation Transcendence " to you. The main character, Lin Feng, had obtained the " Tribulation Transcending Master System ". Under this system, he had trained many people who needed to transcend the tribulation and helped them transcend the tribulation. In the end, he had many students under his belt, so it was not difficult for him to train 500 people! I hope you like my recommendation.😗