Four years. According to the inquiry of official website of Youshi University in China, the academic system of Karamay Campus of Youshi University in China is 4 years, and the charging standard of petroleum engineering in Karamay Campus of Youshi University in China is 3,500 yuan/year. China Youshi University (East China), located in Qingdao, Shandong Province, is a national key university directly under the Ministry of Education of People's Republic of China (PRC), which is jointly established by the Ministry of Education, five major energy enterprise groups, the Ministry of Education and the Shandong Provincial People's Government. It is a national "double-class" and "21project" key construction university.