It means buying a developer's house. If the child's score in the senior high school entrance examination is lower than that of the designated school within a certain range, the developer will give a sponsorship fee to let the child go to this school.

If the child goes to school directly with good grades, or if the child wants to go to another school, then the developer does not have to pay the sponsorship fee.

If the child's grades are poor, far below the school score, then he can't go to school.

Therefore, there are not many opportunities for this promise to be truly implemented, but if the child's grades fluctuate up and down and he really wants to go to this school, then it is meaningful to buy a house, which is equivalent to an extra layer of insurance.