When he was young, he joined Zen Master Tan Ai of Kaiyuan Temple and became a monk. At the age of 20, he received full precepts in Mount Wutai. He then went to Zhao County to study the Hinayana Sutra and then went to Shangdu to study the "Pure Name Sutra".

　　Zen Master Chu Nan of Qianqingshan, Hangzhou, the Dharma heir of Zen Master Huangbo Xiyun, and the son of Zhang, Fuzhou. When he was young, he joined Zen Master Tan Ai of Kaiyuan Temple and became a monk. At the age of 20, he received full precepts in Mount Wutai. He then went to Zhao County to study the Hinayana Sutra and then went to Shangdu to study the "Pure Name Sutra". Although Zen Master Chu Nan has conducted in-depth research on the scriptures, he deeply feels that his duties have not been resolved yet. So he went to Changzhou to pay homage to Zen Master Furong Taiyu (Mazu Fasi). When Zen Master Furong saw Chu Nan , he knew that his cause and condition was not here, so he said to him: "I am not your master. Your master is Huangbo from the outside of Jiangxi."

Zen Master Chu Nan went to Jiangxi again to visit Zen Master Huangbo.

　　Zen Master Huangbo asked, "How is it when the three realms have not appeared?" (The three realms have not yet appeared, that is, nothingness. What is your state at that time? Zen Master Huangbo was asking Master Chu Nan’s nature and original appearance.)

　　Zen Master Chu Nan said, "Is there any evil now (Is there any in front of me)?"

　　Zen Master Huangbo said, "Precaution if there is or not. What is it now (regardless of whether there is or not, what is it now)?"

　　Zen Master Chu Nan said, "It is not the present time."

　　(This thought of mind and nature is the mother of the three realms, neither existence nor non-existence, nor past, present, and future. Therefore, Zen Master Chu Nan gave this answer.)

　　After hearing this, Zen Master Huangbo knew that he had seen his nature, he praised, "My Dharma eyes are already in your hands."

　So, Zen Master Chu Nan stayed beside Zen Master Huangbo, holding a towel to serve, and asking for benefits day and night.

After the Huichang Dharma was in trouble, Zen Master Chu Nan moved into Ciyun Zen Temple in Qianqingshan, Hangzhou, greatly boosting the Huangbo Zen style and responding tirelessly. During this period, he often entered into meditation, for ten days, half a month, or more than a month.

　　Zen Master Chu Nan once answered the crowd: "All the sects can understand Buddhism in the three generations, and they will be like filling water in bottles, and then they will obtain hundreds of thousands of samadhis. It is better to practice the path of non-leakage in one thought, so as to avoid being tied to the cause and effect of humans and heavens."

　At that time, a monk asked, "How to practice the path of non-leakage?" The master said, "There is no body to be taken at the time of a certain age." He said, "Who has not been taught at the time of a certain age?" The master said, "There is no body."

　A monk asked: "What is easy?" The master said, "With clothes and food, without reading scriptures and teachings, without practicing Taoism and worshiping, burning one's body and refining one's head, isn't it easy to be evil?" said, "What is difficult?" The master said, "Slight thoughts are born, and there are five aggregates and three realms, and the cycle of reincarnation and life and death are born from your thoughts. Therefore, all the Bodhisattvas in Buddhism say 'the Buddha'."

　In the first year of Wende (888), two rainbows suddenly ran across the room in Ciyun courtyard, and two deer stumbled into the temple stumbled into the temple. Then the Buddhist temple's Dharma Hall was folded and the wall was tilted. As a result, Zen Master Chu Nan passed away in May of that year. It is also said that , , , 2nd year of Dashun (891). Sun Ru (Sun was originally a general of the Tang general Qin Zongquan . Later, his power continued to expand. At its peak, he had 500,000 troops. The flags lasted for hundreds of miles. Later, he was captured and killed by Yang Xingmi in the Battle of Xuanzhou) When he was fighting for Yangzhou with the Huainan Jiedushi Yang Xingmi in Xuanzhou, the army passed Qianqingshan and demolished the tomb tower of Zen Master Chunan. He saw that the body of Zen Master Chunan, who had been buried for 4 years, was still not rotten, his nails and hair grew a lot, and the soldiers "repent" them.

Historical facts: Emperor Wuzong of Tang Dynasty died of illness in the sixth year of Huichang (846), and inherited the throne from Emperor Xuanzong, who had already had different political views from Emperor Wuzong. Emperor Xuanzong of Tang adopted the policy of opposing Emperor Wuzong of Tang, and all measures implemented during the Huichang period were abolished and all officials valued were removed. The first thing he abolished after his rule was the "Destroying Buddha" order issued by Wuzong. Since the "Destroying Buddha" edict was abolished, some Buddhist believers legitimately restored the Buddhist temple and chanted scriptures. They had originally lived in seclusion in the mountains and walked out of the jungle, and had returned to Buddhism. For a time, Buddhism, which was originally on the verge of extinction in "Huichang", was restored.

Dazhong (Reign of Emperor Xuanzong of Tang Dynasty) In 14th year, Emperor Xuanzong died of illness and succeeded to the throne by his eldest son Li Han (reigned from 860 to 873). Tang Yizong Li Han's level of worship of Buddhism has increased and not decreased compared to his father. The third climax of worship of Buddha that appeared in of the Tang Dynasty took place during the reign of Emperor Yizong of Tang. The main manifestation of worshipping Buddha is to invite the Buddha bones, which are regarded as "sacred objects" by the Buddha world, from Fengxiang Famen Temple, 300 miles away, to Chang'an, Kyoto, to seek blessings from the Tang court, which was in sharp ethnic and class conflicts at that time, and to relieve the dilemma. At that time, some officials expressed their opposition, but Li Han said: "I can see Buddha bones alive and die without regret." Therefore, we ordered the construction of pagodas in various places, and the construction of incense carts and treasure tents were built, and decorated with gorgeous silk and precious pearls and jade to welcome the Buddha's bones. The Buddha's bones arrived at Chang'an , and Yizong personally went out to greet them, worshipped the Buddha's bones, and communicated with tears. His heart of believing in Buddhism was revealed.

It can be seen that from the decades when Emperor Xuanzong of Tang and Emperor Yizong of Tang Dynasty, the domestic policy of advocating Buddhism had a relatively stable period. Zen Master Chu Nan assisted Zen Master Huangbo Xiyun to build Longxing Temple, and later moved to Wanling, Su Gu and other places, which was in this period.

Zen Master Chu Nan once visited Qianqing Mountain twice: the first time to avoid "Huichang destroyed Buddhism", and the second time was to ask Changhua County Magistrate and Zixi Xu General. The first time was to assist Zen Master Xiyun in building the Brahma temple and spreading Buddhism; the second time was to serve all the affairs of the abbot Ciyun Courtyard until his death. He was the only monk who came to Qianqingshan Ciyun Courtyard in the Tang Dynasty to serve Buddhist affairs for the longest time and was buried in the west corner of the temple. We have made certain efforts to the emergence and development of Ciyunyuan Buddhism.

Zen Master Chu Nan has a good knowledge of Buddhism. He once visited famous teachers and learned precepts and scriptures. He studied Buddhist books for 20 years while studying Buddhist books at Sugu Baoen Temple. He is one of the Zen masters who has a relatively comprehensive understanding of "sutra" and "laws" among all the Zen masters in Ciyunyuan, Qianqingshan. A lot of work has been done to spread Buddhist knowledge in Ciyun Academy.

Zen Master Chu Nan was working on Buddhist rituals, and he also devoted himself to the works of Buddhist books. Three works, including " Passing the Lamp Record ", compiled during his lifetime, collected and compiled information from celebrities in the Buddhist world in the early stages, and compiled them into books, and did a lot of work on the research and development of Buddhist teachings. According to his efforts to the cause of Buddhism, Emperor Zhaozong of Tang was well deserved to "give him five deer clothes and don't give him purple clothes". He was the only eminent monk who wrote books in Qianqingshan during the Tang Dynasty.