Why is the admission notice sent to China Post instead of SF Express?

The admission notice was sent to China Post without SF Express. Reason:

College entrance examination is a national talent selection examination. Candidates come from all over the country, and some candidates have remote home addresses. If the courier can't be delivered to the students, it is easy to lose, and the postal courier can be delivered to the candidates accurately no matter how bumpy the road is.

For some remote mountain villages, if the car can't pass, the courier will send the admission notice to the students by bike or on foot, which makes many students feel warm. This kind of intimate service is beyond the reach of other express delivery companies.

Postal service is the earliest express delivery company in China, and its position is unmatched by other express delivery companies. It is commonly known as the "big brother" in the express delivery industry. Compared with other courier companies, postal service may be slower, but it is the only courier company that can deliver express delivery to all corners of China, and it can achieve the accuracy of 100%, which has a high degree of conviction among students.