Zhang Liang’s “Chi Ting Jing” is an important work in the field of public opinion (also known as geomantic omen), which has an in-depth interpretation and elaboration of public opinion. The following is a summary of the interpretation of public opinion in Zhang Liang’s Chi Ting Jing:

1、 The concept and category of geomantic Science
Concept: geomantics is the study of how to choose an environment suitable for human habitation, production and development, and how to seek good fortune and avoid bad fortune by adjusting the environment.
Category: from the choice of country, city and capital to the rise and fall of clan and the prediction of personal destiny, all belong to the category of geomantic science.

2、 The specific application of geomantic Science
Site selection: through the method of Geomatics, we can find places suitable for human habitation, production and development. For example, by observing the trend of mountains and rivers and the direction of water flow, we can judge the good or bad luck of a place.
Prediction: the rise and fall of clans and personal fate can be predicted through the method of geomantics. For example, by observing the public opinion of the yinzhai, we can infer how the family fell and whether the descendants were officials and dignitaries.

3、 Principles and philosophical basis of geomantics
Harmony between man and nature: according to geomantics, man and nature are harmonious and unified. Man should conform to the laws of nature and live in harmony with nature.
Yin Yang and five elements: Yin Yang and five elements are one of the theoretical bases of geomantic science. Through the relationship between Yin Yang and five elements, we can judge the good or bad luck of a place.

Zhang Liang’s “Chi Ting Jing” has an in-depth interpretation and elaboration of the study of geomancy, and gives a comprehensive introduction from the aspects of concept, category, application, principle and philosophical basis. These interpretations and expositions provide an important reference for our understanding of public opinion.