Ningbo University is a local institution, neither 2 1 1 nor 985. Although its English is good, it is the easiest to test.
University of Electronic Science and Technology of China and Sichuan University are both 985, both in Chengdu, but Sichuan University has two disciplines: foreign language and literature doctoral degree and English language and literature doctoral degree, and translation and English are more powerful and more difficult.
Difficulty: Sichuan University > University of Electronic Science and Technology of China > Ningbo University.