Pan chronologically studied and inspected the philosophies of Cheng-Zhu, Lu-Wang, and Buddhist philosophy (especially the Zen buddhism). Pan discovered some subtle conflicts between these philosophical schools, and thought the Neo-confucianism developed in Song, Yuan and Ming dynasties were quite derivatives from the original thoughts or principles of Confucius and Mencius.
Pan criticized that Neo-confucianism mixed too much Zen buddhism, thus called those confucian scholars the "Monks of the Confucian Temple".
Pan considered that Cheng-Zhu School philosophically debated with Lu-Wang School is a kind of using Taoism to attack Buddhism (以老攻佛), and vice versa (以佛攻老).
Pan's philosophy was searching for the humanity (求仁), and he emphasized to search truth or true knowledge from daily living and practice. Pan proposed the theories of one integrated mass (渾然一體/浑然一体) and the sight from the true mind (見在真心/见在真心).
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