1. In terms of difficulty, Tian Yingzhang's copybooks are relatively standard and easy to learn, while Liu Tengzhi's copybooks are too complicated to learn well, so Tian Yingzhang's copybooks are better.
2. In terms of price, Tian Yingzhang's copybook and 39 yuan's copybook are not expensive, while Liu Tengzhi's copybook is too expensive compared with the copybook of the same quality, and the cost performance ratio is relatively low.