After the scores come out (usually late June), you have a short window — often only a few days — to submit your 志愿 (university and major preferences). This is when the actual decision about where you will spend the next four years gets made.
Most provinces now use a 平行志愿 system: you rank up to about ten universities in order of preference, and the system slots you into the highest-ranked one that will admit you at your score. Ordering matters.
The classic strategy is 冲 (reach), 稳 (target), 保 (safety). Two or three reach schools whose historical cutoff is slightly above your score. Four or five target schools where you are safely admissible. Two or three safeties well below your score.
Look at the historical cutoff scores (投档线) for the past three years, not just last year. Cutoffs bounce. A one-year dip does not make a school a safety.
Read the enrollment plan (招生计划) for your major of interest. Some majors have only a handful of seats. A university you can get into does not guarantee the major you want in that university.
Do not choose a major only because its cutoff is high. High cutoff often means everyone else also thought it was prestigious, not that the program is best for you.