This is the usual examination method in Hengshui private middle school. After the monthly exam, Hengshui No.1 Middle School and Hengshui Zhizhen Middle School of Hengshui Experimental Middle School will also have a mid-term exam with two books and a final exam with three books and four books. The reason why it is called "one bird" is to sort out and guide teaching only by examining the knowledge that students have not mastered in the exam.