Domestic universities appreciate the results of the competition, and there are clear regulations on the position. If you win the first prize in high school, you will be eligible to walk.
If it's only the first prize of NOIP, you really need to take an appointment exam. If it is Tsinghua, the examination subjects are English mathematics, Chinese physics and an extremely BT comprehensive paper on science (it is said that only 1 in each province can do well). It is more difficult than the college entrance examination. A lot of English is estimated to be CET-4 or CET-6. The competition is fierce. Personally, I feel that OIer has little advantage in this respect (unless I am extremely capable).
It would be much more convenient if you could join the provincial team. Generally speaking, the top five or six NOIP players can go to national competitions (that is, NOI), and if they win medals in NOI, they can directly sign contracts with universities (but they must win gold medals to sign Tsinghua). The winning percentage is 60%, and the gold medal is probably in the top 20.
As for the national training team. . . After a period of special training, I finally learned from the senior high school entrance examination that three people participated in the international competition (IOI). If I can be selected, it will be the level of the god cow. Last time, Tsinghua was a cinch.
This is the basic situation. Lz, work hard