Zhang Guodong once participated in setting the questions for the national college entrance examination. After returning to his hometown to teach, he remained committed to tutoring students free of charge. Unexpectedly, he was falsely accused and framed by parents, leading to his dismissal on the very day of the college entrance examination. Once the students had finished their exams, the truth finally came to light. He exposed the schemes of unscrupulous educational institutions and subsequently turned to online teaching, wholeheartedly sharing his knowledge and educating students so that more people could benefit from learning.