First, advantages
Hundreds of primary and secondary schools and thousands of private institutions all over the country are using Zhao Rufei's Calligraphy Practice for writing teaching. It combines traditional calligraphy with modern scientific knowledge, and uses the knowledge of golden section, lever balance and perspective principle to establish the "trapezoidal grid calligraphy practice method", which has won the national patent.
Second, shortcomings.
The advantages and disadvantages of Zhao Rufei's calligraphy practice are that the structure is fixed and unchanged. The number of lecturers is 1,000, which can be said to be a contemporary "cabinet style". Easy to use, but the upper limit is not high. Zhao Rufei's price is high, and other calligraphy practice institutions are generally cheaper than him.
There is also a child writing in a full trapezoidal grid, which cannot be changed in the Tian Zi grid; Secondly, the horizontal line of the trapezoidal grid is oblique, and the words written along it will have a three-dimensional effect. Tian Zige's horizontal line is flat, so he is used to writing along the horizontal line, while Tian Zi Gerry's handwriting is still very rigid. Children can't change.