1, if you are willing to enroll in advance, you must never change your major unless there are extremely special circumstances.

2. If you are admitted to this major in normal batches, you can apply to the school for a major change after the first semester. The major to be transferred must be a major with vacancies in the school, and it can only be transferred after the school approves it. The probability of changing majors is generally around 5%.

If you are a master, you can take a second major without changing the original major and finish your studies at the same time, so there is no need to change your major.