1. Mode of class: Adult correspondence education is conducted in the form of distance education. Students can learn through online courses, video teaching and e-books.

2. Examination method: The examination of adult correspondence education is divided into two forms: closed-book examination and open-book examination. A closed-book exam refers to an exam conducted at a specified time and place, and students need to answer questions on the test paper. Open-book examination means that students can refer to study materials to answer questions during the examination. Nanjing Agricultural University, named Nannong for short, was founded in 1902, which is a comprehensive key university focusing on agriculture directly under the Ministry of Education of China.