Jinglun Tianxia is an app for getting started with learning the Book of Changes.

The "Book of Changes" is one of the oldest documents in China, and is respected by Confucians as the first of the "Five Classics"; generally speaking, the three great ancient books include the "Huangdi Neijing", "The Book of Changes", and "The Classic of Mountains and Seas", but they have not been written into books All late. The Book of Changes uses a system of symbols to describe the simplicity, change, and difficulty of states, expressing the philosophy and cosmology of classical Chinese culture. Its central idea is to describe everything in the world through the alternation of yin and yang. The Book of Changes was originally used for divination, but its influence has spread throughout all aspects of Chinese philosophy, religion, medicine, astronomy, arithmetic, literature, music, art, military and martial arts. Since the 17th century, the "Book of Changes" has also been introduced to the West. It is part of the Classics in Sikuquanshu. It is the earliest philosophical book among the Thirteen Classics that was not harmed by the burning of books by Qin Shihuang.
Use this app to help you learn the basics of the Book of Changes.