20 15 Hubei college entrance examination mathematics is said to be the most difficult in recent ten years. This year 120 is high! Candidates have said that they have never done such a brazen math test paper. After the math exam in the afternoon, it is generally difficult for students to reflect, and even some students cry because of the math exam.
I have never done such a sour and cool math problem ... "Write solid geometry and unknown words". It is said that this word is called Guibi.
Yao's "Nine Chapters of Arithmetic" obliquely solved the cube and got two pieces. The circuitous tunnels are Ma Yang and Turtle Tunnel. I got the feeling of classical Chinese!