What's the difference between heaven and earth, red and blue?

Tiangong Vientiane Red and Vientiane Blue refer to two special textbooks for mathematics examination, which are mainly used for mathematics learning in K 12 stage. Their main difference lies in the content and difficulty of the textbook.

Tiangong Vientiane Red is a higher-level teaching material, which is mainly suitable for senior students, such as junior high school and senior high school students. The content of the textbook is more in-depth and comprehensive, covering all aspects of mathematics, including algebra, geometry, probability and statistics. The topic is difficult, emphasizing the training of thinking ability and problem-solving ability.

Vientiane Blue is an introductory textbook, which is mainly suitable for junior students, such as primary school students. The content of the textbook is relatively simple, mainly focusing on the learning and understanding of basic knowledge. The topic of Vientiane Blue is relatively difficult, focusing on cultivating students' understanding and application ability of mathematical concepts.

To sum up, there are obvious differences in the content and difficulty between Tiangong Vientiane Red and Vientiane Blue, which are suitable for students of different grades. Which textbook to choose depends on students' grades and math level. I hope it helps you.