15: 1。 According to the official information released by Jiangnan University, the enrollment ratio of master of biotechnology and engineering in 2022 is 15: 1. Jiangnan University, located in Wuxi, Jiangsu Province, is a university directly under the Ministry of Education of People's Republic of China (PRC), a national "world-class discipline construction university", a national "2 1 1 project" and a national key construction university "985 Engineering Advantage Discipline Innovation Platform".