Five people. Relocation of No.1 Middle School in Hekou District, Dongying City, 1985. Located in Hekou District, an emerging city in the Yellow River Delta, it is a key high school and provincial standardization school in Dongying. Official website, No.1 Middle School in Hekou District, Dongying City, inquired that there are 6 classes in this high school, with 45 students in one class. There are five class teachers in high school, and one class teacher manages two classes. Dongying Hekou No.1 Middle School has strong teachers, good environment and complete facilities.