1. Contribution to the spread of Buddhism. Two months after Jian Zhen's arrival in Japan, after careful preparation, he built an altar in Dongda Temple on April 5th. Jian Zhen personally presided over the altar, offering rings to the Japanese emperor's father, empress dowager and prince. Later, hundreds of monks were appointed as clergy. Jian Zhen established Tang Temple in Dongda Temple, trained Japanese monks and formed a complete Buddhist system. Although Jian Zhen was blind, he corrected the mistakes of copying Buddhist scriptures in Dongda Temple by reciting scriptures, and his disciples proofread them according to their own scriptures, which promoted the research and development of Japanese Buddhism. Jian Zhen preached the law carefully, reformed the accumulated disadvantages, and made the Legalist school develop into an independent sect in Japan, known as the ancestor of Japanese Legalists.
2. Contribution to architectural art. Jian Zhen is also a master architect. During his travels in Luoyang and Chang 'an, he carefully studied the architectural styles of famous temples and ancient temples, and personally participated in the architectural design of more than 80 temples. After Jian Zhen brought the architectural art to Japan, according to the layout and architectural style of Tang Temple, he built Tang Zhaoti Temple in Nara. The Japanese emperor personally wrote the temple monument. The Zhao Ti Temple in the Tang Dynasty is exquisite in structure and magnificent in momentum. It is not only the carrier of Buddhist culture, but also the platform of humanistic landscape, which has had an important influence on Japanese architecture and sculpture art, and even formed an important "Tang and Zhao Temple School" in the history of Japanese architecture and sculpture.
3. Contribution to medicine. Jian Zhen paid attention to studying medicine in his missionary work, and with the passage of time, his medical attainments gradually deepened. According to historical records, when he was in daming temple, Yangzhou, he personally made medicines for many times to help the poor and sick. When I arrived in Japan, although I was blind, I still used my sense of smell to identify herbs, treat the Japanese people, and personally feel the pulse of the emperor, so as to get rid of the long-term incurable diseases of the emperor. He left a medical book called Master's Secrets, which made important contributions to the development of Japanese medicine and was known as the ancestor of Japanese traditional Chinese medicine.
4. Contribution to culture. Du Dong, Jian Zhen, brought more than 500 volumes of various Buddhist scriptures, as well as original calligraphy posts by calligraphy masters such as Wang Xizhi and his son. Jian Zhen has opened Tang Zen Temple and Tang Zhao Ti Temple to provide accommodation for foreign monks. Believers from all over the world gather here to learn French, read classics and learn Chinese, which promotes the wide use of Chinese characters and the wide spread of Chinese culture. Jian Zhen's disciples, whether poets, Buddhists, sculptors, painters, or craftsmen, insisted on communicating Buddhism in Tang Yin and Chinese, which also promoted cultural exchanges between China and Japan. Calligraphy is a unique art of using Chinese characters. Brought a book "Jin Authentic Works" and three posts "Xiao Wang Authentic Works". At that time, learning calligraphy in Japan became a common practice.
Jian Zhen Du Dong introduced China Buddhism and China culture into Japan, which promoted the development of Japanese culture and society. In this regard, Du Ming Xishan, the deacon of Tang Zhaoti Temple, once said emotionally: "The Japanese people are grateful to the master for his kindness and regard him as a great benefactor of the Japanese people."
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