Dear All:
According to Chapter 10, Article 42 of Regulations on Student Status Management for International Undergraduates of Ningbo University :

starting from 2020 batch, upon your graduation, if you are taught in English, you need to get HSK 4 certificate to get your degree; if you are taught in Chinese, you need to get HSK 5 certificate to get your degree. The regulation file is attached below.
And only certificates obtained after your enrollment into Ningbo University can be used for degree application.
Attention: students of 2 + 2 program (Changxin and Russian students) will follow the above regulations from 2022.