What is the principle of I ching fortune telling?

The prediction of Yijing is mainly based on your date of birth, and the traditional principle is the balance of five elements. For example, if there is a fire on your birthday, just fill it in your name and make up for it if there is water shortage. This is the prediction of the traditional Book of Changes. Now there are new methods: mainly pay attention to the space environment, for example, you are a male and female boss, is your direction auspicious? Some words on the date of birth are auspicious or unlucky.