Master Shih Puguang, a disciple of Master Hsuanchuang, was also named ＂the Light of Mahayana.＂ As one of the chief pupils of Master Hsuanchuang, Puguang was a scholar in charge of scribes (bi shou 筆受). It is said that Puguang was personally instructed by Master Hsuanchuang to help with adapting the oral transmission of the ＂Kusharon＂ (＂Abhidharma-kośa＂俱舍論) following the West Indian Sapoduobu school (Sarvāstivāda, 說一切有部). Accordingly, Puauang wrote the ＂Kusharonki＂ to describe the local customs of India, the theories of early Buddhist schools, and the concepts of early Buddhist scholars. His writings also evaluate the pros and cons of the ancient and newer translations of ＂Kusharon＂, and enumerate the different opinions among scholars. The ＂Kusharonki＂ (俱舍論記) has provided a great source of information for future academic studies of the ＂Kusharon＂. The three major annotations of the ＂Kusharon＂: the ＂Kusharonki＂ of Puguang, the ＂Kusharon sho＂ (俱舍論疏) of Fabao (法寶) and the Shentai (神泰), have acquired comparable reputations. As fellow-disciples of Master Hsuanchuang, Puguang and Fabao hold different views of Buddhism. Puguang was frequently criticized by Fabao and even after a thousand years, serious criticisms had been voiced by a foreigner scholar, Fachuang. Having an influence on the oral transmission of Master Hsuanchuang's teachings, Puguang has preserved the original concepts of Sāvaka and different thoughts of Indian scholars. His writing plays a pivotal role in the investigations of early Buddhist schools. Puguang worked intensely with Master Hsuanchuang on the translation of Buddhist scriptures. This provided the basis for the opinion in the ＂Song Biographies of Eminent Monks (Song gaosengzhuan＂宋高僧傳) that Puguang was instrumental in ＂the brilliant success of Tipitaka＂.