P9389 [THUPC 2023 Finals] Lanke Cup.

It is said that Pang Tong moved forward slowly. Looking up, he saw two mountains pressing close together, with dense trees; and it was late summer and early autumn, so the branches and leaves were lush. Pang Tong felt very suspicious, reined in his horse and asked: “What place is this?” Among the troops who had just surrendered, one pointed and said: “This place is called Luofeng Slope.” Pang Tong was shocked and said: “My Daoist name is Fengchu, and this place is called Luofeng Slope. This is not good for me.” He ordered the rear troops to retreat quickly. Suddenly, there was a cannon shot in front of the hillside, and arrows came like flying locusts, all shooting toward the one on the white horse. Poor Pang Tong ended up dying under a rain of arrows. He was only thirty-six years old. Later generations wrote a poem to lament: “Ancient peaks connect with purple-green piles; Shiyuan has a home by the mountain bend. Children are used to recognizing the Qujiu tune; In lanes and alleys people once heard of his Zhanji talent. He planned to split the realm in three with fine carving; Yet he drove ten thousand miles alone in hesitation. Who knew the heavenly dog and shooting star would fall, Not letting the general return in glory.” Earlier, there was also a children’s rhyme in the southeast: “One phoenix with one dragon, Together they go into Shu. But halfway along, The phoenix dies east of the slope. Wind brings rain, rain follows wind. When the Han rises, the Shu roads open; When the Shu roads open, only the dragon remains.” — *Romance of the Three Kingdoms*, Chapter 63: Zhuge Liang Weeps Bitterly for Pang Tong, Zhang Yide Righteously Releases Yan Yan.

From May $4$ to $9$, $2023$, the schedule of the first stage of the main tournament of the first “Quzhou Lanke Cup” World Go Open was successfully held in Quzhou. As the first world Go tournament held fully offline after the pandemic, and also currently the only world Go tournament hosted by China that is held once every year, it undoubtedly attracted wide attention from Go fans at home and abroad. “Yu Ke, one board is never seen again; the green mountains keep the name Lanke.” Quzhou is a holy land of Go, and the story of “Wang Zhi meeting immortals” has been passed down. The Lanke Mountain within its territory thus became famous throughout the world. Because of this, “Lanke” is also one of the alternative names of Go. From ancient times to the present, many Go stories, books, and game records have also borrowed the allusion of “Lanke”, or were named “Lanke”. This “Lanke Cup” World Go Tournament is a brand-new world-class Go event created on the basis of keeping the original “Lanke Cup” China Go Championship. It attracted top Go players from all over the world. The Chinese team sent $15$ leading players, including Ke Jie, Gu Zihao, Wang Xinghao, Ding Hao, Li Qincheng, and others. The Korean team had $8$ players, the Japanese team had $5$ players, plus $2$ players from Taiwan, China, and $2$ players from Europe and America. It can be said that the world’s very best Go players gathered here. With the development of technology, the huge progress of artificial intelligence and the full popularization of online media, Go, a traditional sport from China, is gaining new vitality. On the internet, people can watch the latest live broadcasts at any time, as well as accurate AI analysis and detailed interpretations by top Go players. The convenience of obtaining resources has made people’s attention to Go rise to an unprecedented level. Go is no longer a “niche game” that only a small number of enthusiasts who understand Go can enjoy; top Go players are also no longer just a mysterious identity. More and more top players have begun to interact closely with fans online, popularize Go knowledge, explain the latest games, and have won unanimous praise. Just as among the players participating this time, one player is also an internet celebrity streamer with more than $1.5$ million followers, and there is even a player who is the owner of an internet-famous restaurant. The protagonist of our story today is exactly such a legendary figure. As an undergraduate student at Tsinghua University and also a top Go player, his every move will undoubtedly attract huge attention. This time, he participated in the “Lanke Cup” competition, and everyone without exception was optimistic about his prospects, especially since it was the peak period of Korea’s “number one” Go player Shin Jin-seo 9-dan, and countless Chinese fans placed on him the important task of “sniping ‘Little Shin’”. After the draw on May $4$, no one would doubt whether he could win the first-round match on the $5$th; some Go experts even directly made the prediction of “a big win, impossible to lose”. However, the match on May $5$ still produced a shocking upset. When he already had victory in hand and the AI win rate reached $99\%$, he repeatedly chose “the move with the most live comments”, and in the end, because of several fatal mistakes, he threw away a good position and lost to the Taiwan, China player Lai Junfu 8-dan. After the match, while shocked, people guessed the reason for the loss. Some said that his poor form had already shown in previous years, and “when you are doing XX, Little Shin is playing Go” became a famous sentence used to tease the gap between him and Shin Jin-seo; some said that his $12$-game winning streak before the tournament instead made him nervous, and thus he repeated his old problem of being careless when ahead; others brought up the allusion of “Luofeng Slope”, to prove that perhaps he was destined to be incompatible with the “Lanke Cup”... But perhaps, this uncertainty and unpredictability is exactly the charm of Go. Based on all the information above, please guess who the protagonist of this article is.

No input.

Output a string consisting of lowercase letters, representing the full pinyin of the protagonist’s name mentioned above. If the answer is Jack Ma, you should output `mayun`.

### Hint The protagonist’s name has already been mentioned in the statement. Some seemingly nonsense information in the statement is actually valuable. ### Source From the 2023 Tsinghua University Student Programming Contest and Collegiate Invitational Contest (THUPC2023) Finals. Resources such as editorials can be found at . Translated by ChatGPT 5