The Buddhism belief and theory interpretation of Chih Chao has always been one special and important part in spiritual history of Six Dynasties. Since Chih Chao was a Buddhist who lived a spiritual and religious life at home, he participated in numerous Buddhism activities and also left many writings of studying Buddhism. ”Feng fa yao (Rules for Observing the Dharma)” became the only work that contemporary Buddhism celebrity and people who study religion at home respect and worship. ”Feng-Fa-Yao” is ”essentials of Buddhism” that Chih Chao wrote for the Buddhists who follow the percepts of Buddhism, and included a summary by Chih Chao concerning his perspectives of numerous Buddhism theories in that era. It also was his Buddhism belief concept and a reflection of theory interpretation. The entire writings to discuss the main ideas follow the context of ”abstain” to ”calmness”; ”calmness” to ”wisdom”. From superficial concept to difficult theory, it states the ways to observe Buddhism. By interpreting constructs of ”living a religious life and causal relationship” and ”behaviors and deserved fate”, it presents daily rules of a famous person, interprets principles of karma and deserved fate, discusses the study of Buddhism for a spiritual wisdom, shows the belief of ”living a spiritual life in a material world” for celebrities in that era. It also reveals criticism of thoughts and custom in that era, which deeply contains a fair viewpoint beyond the mainstream celebrities. As to the confirmation of ”emptiness” to accomplish Buddhism, it is obviously inspired by Buddhism wisdom of Bo-re from outside branch of Buddhist monk.