Difficult. Official website of China Education Examination Network shows that candidates who take the postgraduate entrance examination for mechanical automation in China Metrology University need to master the contents of electrical engineering and its automation, mechanical design and manufacturing and its automation, mechanical and electronic engineering and so on, and also need a lot of practical achievements to get a passing score in the exam, so the exam is more difficult. Postgraduate entrance examination is an entrance examination for undergraduate graduates, undergraduate graduates and students with equivalent qualifications to study for master's degrees in colleges and universities, similar to the college entrance examination for high school graduates.