Qingliang Chengguan (; Korean: Jinggwan; Japanese: Chōgan, 738–839 or 737-838 CE),Chengguan 澄觀, Da Fangguang Fo Huayanjing Shu 《大方廣佛華嚴經疏》, Taisho Tripiṭaka 大正新脩大藏經 T35n1735, ed. Dazheng xinxiu dazangjing kanxinghui 大正新修大藏經刊行會 (Tokyo: Dazang chuban zhushi huishe 大藏出版株式會社, 1988). was an important scholar-monk and patriarch of the Huayan school of Chinese Buddhism also known as Huayan pusa (bodhisattva Avatamsaka) and Qingliang Guoshi (Imperial Preceptor "Clear and Cool", Clear and Cool is a name for Mount Wutai)."Chengguan", in Buswell and Lopez (2013), The Princeton Dictionary of Buddhism, pp. 179-178. Princeton University Press.Hamar, I. "Chengguan". in Silk, J. Brill’s Encyclopedia of Buddhism, Volume II: Lives.
Chengguan is most widely known for his extensive commentaries and sub-commentaries to the Avataṃsaka Sūtra (Huayan jing), as well as for his translation of a new Gandhavyuha sutra version, together with the Indian monk Prajña. Chengguan's commentaries on the Avataṃsaka quickly became one of the authoritative sources for Huayan doctrine. Chengguan lived through the reigns of nine emperors and was an honored teacher to seven emperors starting with Xuanzong () until Wenzong (). Chengguan was also the teacher of the influential Huayan patriarch Zongmi.
Life Chengguan was a native of Yuezhou Shanyin (modern day Shaoxing, Zhejiang province). At the age of 11, he left home and became a novice at Baolin Monastery (寶林寺) in Benzhou (本州).Muller, Charles. 澄觀 Chengguan, Digital Dictionary of Buddhism. At the age of 20 (in 757 CE), he became a fully ordained monk under Tanyi (, 692-771) and took bodhisattva precepts under Changzhao (常照). Around 758 CE, he practiced at the renowned Qixia Monastery (棲霞寺) in Runzhou (present-day Zhengjiang) in Jiangsu Province. His teacher there was the Vinaya master Li (醴律师, Li lüshi).
Chengguan traveled through central, western, and northern China, studying numerous works under various Buddhist teachers. He also visited Jinling (modern-day Nanjing), where he studied the teachings of the "Three Treatise School" under the master Xuanbi (). During the reign of Emperor Daizong (762–779), he stayed at Waguan Temple () in present-day Nanjing, Jiangsu Province. There, he studied two important Mahayana texts: the Awakening Faith in the Mahāyāna and the Mahayana Mahaparanirvana Sutra. He also traveled to Qiantang (current area around Hangzhou, Zhejiang Province), staying at Tianzhu Monastery (天竺寺), and dedicating himself to the practice and study of Huayan, the Avatamsaka Sutra and Fazang's commentaries.
His biography also mentions that he practiced Chan under Wutaia Wuming (722–793) of the Heze school of Heze Shenhui (670–762). Between 775 and 776 CE, Chengguan was also a student of Jingxi Zhanran (711–782), the great reviver of the Tiantai school with whom Chengguan studied the Lotus and Vimalakirti sutras. Chengguan also practiced Chan in two other schools: under Huizhong (慧忠, 683–769) and Faqin (, 714–792) of the "Ox-Head School," as well as under Huiyun (, dates unknown), a disciple of Laoshan Yifu from the "Northern School. He was also learned in non-Buddhist subjects such as various Chinese philosophical classics, history, philology, the siddham script, Indian philosophy, the four Vedas, the five sciences, mantras, and rituals.Gregory, Peter N. Tsung-mi and the Sinification of Buddhism, p. 64. Honolulu: Kuroda Institute/University of Hawai'i Press, 2002.
However, Chengguan's primary focus was on the Avatamsaka Sutra and Huayan studies. Chengguan studied Huayan under Fashen ( 718–778), who was a student of the Huiyuan (, 673–743), a disciple of Fazang. Chengguan soon became known among elite circles as an erudite intellectual who lectured and commented on the Avataṃsaka Sūtra.Chengguan 澄觀, Da Fangguang Fo Huayaning Suishu Yanyi Chao 《大方廣佛華嚴經隨疏演義鈔》. Taisho Tripiṭaka 大正新脩大藏經 T36n1736, ed. Dazheng xinxiu dazangjing kanxinghui 大正新修大藏經刊行會 (Tokyo: Dazang chuban zhushi huishe 大藏出版株式會社, 1988).
In 776 CE Chengguan returned to the sacred mountain of Wutaishan (believed to be the abode of Manjusri), where he stayed for the next 15 years. He resided at Huayan Monastery (華嚴寺), where the monks built a pavilion for him to write his works. Between 784 and 787 CE, Chengguan wrote his commentaries on Śikṣānanda's new eighty fascicle translation of the Avatamsaka sutra, which was completed in 799 CE. In the same year, Emperor Dezong granted Chengguan the title of Calm and Cool Imperial Teacher (Qingliang Guoshi). After completing the new translation of the Gandhavyuha, Emperor Dezong asked Chengguan to clarify the main concepts of the Avatamsaka. In 796 CE, he was invited by Emperor Dezong to Chang'an to participate in the translation of the Gandhavyuha sutra with the Indian master Prajña (般若; 734–c. 810. Emperor Dezong was so pleased with Chengguan that he awarded him a purple robe and the title of "Master of Buddhist Teachings" (jiaoshou heshang). Chengguan received numerous honorary titles: Master of the Purple Robe (796), Imperial Teacher (guoshi) (799), Monastic Professor (da senglu), Chief Monk (sengtong), and Dharma Master Qingliang (795).
In 810 CE, former Emperor Xianzong (r. 805–806) summoned him and asked for an explanation of the term "dharmadhatu." After this meeting, Chengguan was appointed as sengtong ("monastic supervisor"). He was a respected teacher by all emperors; there were nine emperors during his lifetime, and he taught seven of them.Imre Hamar. An Ideal Scholar-Monk: Chengguan. Str. 79
Chengguan was also a serious Buddhist practitioner. According to Guo Cheen, he maintained various self-determined vows including "always keeping his sash and alms bowl by his side, avoiding looking at women, avoiding visits to laypeople’s homes, never lying down to sleep, abandoning any fame or fortune, regularly reciting the Lotus Sūtra, regularly teaching on the Avataṃsaka Sūtra, regularly studying Mahāyāna texts, and never ceasing to be compassionate in an attempt to help all beings."Guo Cheen (2014), Translating totality in parts: Chengguan's commentaries and subcommentaries to the Avatamska Sutra, p. 8. Lanham: University Press of America. The Song Biographies of Preeminent Monks and A Brief Account of the Five Patriarchs of Huayan School offer two specific sets of his ten vows that are equal in rigor but with slight variations.
Thought
Doctrinal issues Chengguan's thought attempts to follow Fazang's thought closely. Due to this, Chengguan criticized Huiyuan (Fazang's student) for not adhering to Fazang's teachings closely enough. For example, Huiyuan modified Fazang's system of doctrinal classification (panjiao). This system divided all Buddhist teachings into five: Hīnayāna teaching, Elementary Mahāyāna teaching (Madhyamaka and Yogacara), Final Mahayana (Buddha nature teachings, Awakening of Faith), Sudden (Vimalakirti sutra) and Perfect Teaching (the Huayan One Vehicle). Huiyuan included Confucianism and Daoism into this system. But Chengguan criticized Huiyuan and those who saw Taoism and Confucianism part of Buddhism's doctrinal system. Huiyuan had also rejected the idea that the Sudden teaching belonged in a doctrinal classification system, since the sudden teaching is based on utter silence and thus it has no doctrinal content, instead it is merely a statement about the inexpressibility of ultimate truth. Chengguan also criticized this view, seeing the "Sudden teaching" as a proper doctrine of its own.Van Norden, Bryan and Nicholaos Jones, "Huayan Buddhism", The Stanford Encyclopedia of Philosophy (Winter 2019 Edition), Edward N. Zalta (ed.).
Syncretism Chengguan developed Huayan thought in new directions by drawing on various Buddhist schools including various Chan schools, Xuanzang's Weishi and Tiantai.Gregory, Peter N. (2002). Tsung Mi and the Sinification of Buddhism, p. 64. University of Hawaii Press (Studies in East Asian Buddhism, 16). Sources on Chengguan's life, like Peixiu's epitaph, mention his prolific studies of various Chinese Buddhist traditions and texts, including numerous Mahayana sutras, Huayan, the works of the Yogacara school (Yogacarabhumi and Chengweishilun), the Sanlun school, various Chan masters, and the works of Zhiyi (such as the Mohezhiguan), Daosheng and Sengzhao.
Chengguan often integrates the perspectives of these other traditions in his Huayan commentaries. For example, while Fazang generally criticized the Weishi school of Xuanzang, Chengguan often relies on and quotes Xuanzang's Cheng weishi lun (成唯識論; Demonstration of Consciousness-only; T. 1585).Hamar, Imre. "A Huayan Paradigm for Classification of Mahāyāna Teachings: The Origin and Meaning of Faxiangzong and Faxingzong" , in Reflecting Mirrors: Perspectives on Huayan Buddhism, pp. 195-220. Chengguan also interpreted the Sudden division of Fazang's doctrinal schema as referring to the teachings of Chan Buddhism (while Fazang merely saw it as referring to the teaching of Vimalakirti). According to Chengguan, Chan teachings teach how the mind is Buddha and transmit this wisdom through non-verbal methods. As such, Chengguan seems to have highly respected the teachings of Chan Buddhism, seeing it as only second to Huayan. Furthermore, in his sub-commentaries, Chengguan says that his work relies on "integrating the Chan practices of both the Southern and Northern schools" and "folding-in the mystical intents of Tientai and the Three Contemplations of Nanyue."Guo Cheen (2014), p. 16. This indicates that Chengguan was conscious about his syncretic tendencies.
Regarding the Chan Buddhist influences, while Chengguan draws on the sources of Northern, Southern and Oxhead Chan schools, he did not consider himself as belonging to any of these, instead claiming that he was from the "school of mind" (xinzong, 心宗). As such, while he was influenced by Chan, Yoshizu Yoshihide argues that Chengguan should not be seen as being associated with any Chan school per se, and instead he should be seen as a Huayan master who drew on and evaluated various Chan sources. Chengguan was also highly critical of Chan masters who ignored or disparaged the doctrinal study of Mahayana scriptures.
Chengguan also draws on Confucian and Daoist sources in his work, though he is clear that this is merely a skillful means and that he sees these teachings as inferior to Buddhism. As such, he said that he was "borrowing their words but not adopting their meaning."Gregory, Peter N. (2002). Tsung Mi and the Sinification of Buddhism, p. 66. University of Hawaii Press (Studies in East Asian Buddhism, 16).
The Fourfold Dharmadhatus Chengguan's main unique contribution to Huayan thought is the theory of the fourfold Dharmadhatu or four Dharmadhatus (). This theory is found in Chengguan's Meditative Perspectives on the Huayan Dharmadhatu ().Fox, Alan (2015). The Practice of Huayan Buddhism, The Dharmadhatu is the ultimate reality that must be known by the bodhisattva and the four dharmadhatus are four ways of understanding ultimate truth.
The four dharmadhātu are:Guo Cheen (2014), pP. 27-26.
The dharmadhātu of phenomena (), which is the view in which all dharmas are seen as particular separate phenomena () and which is to be seen as like an illusion. In the widely used Huayan metaphor of the water and the waves, the phenomena are symbolized by the waves. The dharmadhātu of principle () which sees all phenomena as arising from li (, the ultimate principle), which is "emptiness", the “One Mind” () and Buddha nature, it is the source or origin of all dharmas as well as the immutable nature of all dharmas, the ultimate essence of all things. It is the non-dual and transcendental Absolute according to Guo Cheen. In the metaphor of the water and the waves, the principle / essence is symbolized by water.