1. To apply for studying in Portugal, it is now required that Portuguese must reach at least B2 level and obtain a formal Portuguese proficiency certificate. Whether studying in China or studying in a Portuguese university, the ultimate goal is at least B2!
The advantage of learning Portuguese in China is that it saves time. Applications for studying in Portugal need to be prepared one year in advance. In a year's time, even students without basic knowledge of Portuguese can reach B2 level through special Portuguese training courses.
3. If you plan to go to Portugal to study the language, the language environment will be better and the progress will be faster, but it will take an extra year and cost, and it is best to reach the level of primary Portuguese before going, otherwise you will not be able to keep up with the progress of language classes, the pressure on students will be greater, and it will be more difficult without a basic Portuguese visa.