Zhao Rufei of Zhumadian combined traditional calligraphy with modern scientific knowledge, applied the principles of golden section, lever balance and perspective, and founded the "trapezoidal grid calligraphy method", which won the national patent.
2. Zhao Rufei of Zhumadian has a good structure and many changes. The number of lecturers is 1,000, which can be said to be a contemporary "cabinet style". Easy to use.