The Nature of 中

Aさん：「Ever notice that the Japanese character 中 looks just like the Greek letter Φ」

Zさん："Whoa. It all makes sense. China is the golden ratio country. When you are deep in thought, you are contemplating the golden ratio.  Junior High School is the golden ratio ... school."

Aさん：「... oh ... also... it's the angle between the x,y-plane and the z-axis in a spherical coordinate system.」

Zさん："Well, now you're just being absurd."