Is it hard for graduate students in Peking University?

Thanks for your hard work. Graduate students in Peking University are very hard, because they are surrounded by good studies and dare not slack off at all. Graduate school is really tiring. After landing, I realized that graduate school is more difficult. Some people say that the two happiest moments in graduate school are the moment when you find your grades and the moment when you receive a text message. In fact, as an experienced person, this statement is quite recognized.