In the collection industry, Zhang Boju is an unavoidable name. He is a famous collector of ancient calligraphy and painting, as well as a poet. In his new work "The Legend of Calligraphy: Zhang Boju and the National Treasure of the Forbidden City," Rong Hongjun tells the story of Zhang Boju's legendary experience. Zhang Boju has devoted himself to the research and collection of traditional Chinese calligraphy and painting art, and has purchased famous works such as Lu Ji's "Pingfu Tie" and Zhan Ziqian's "Spring Journey". Many treasures contain rich historical information, such as the "Pingfu Tie" written in Zhangcao, which has reference value for studying the changes in Chinese characters and calligraphy. Li Bai has written many works, and "On the Balcony Calligraphy" is his legacy. Zhang Boju and his companions were influenced by the famous scholar Shi Shuqing. Rong Hongjun began studying Zhang Boju very early on: in order to prevent the outflow of national treasures, Zhang Boju sold his family property, sold his hairpins, and even sacrificed his life. In the end, he donated these precious legacies to his motherland. Zhang Boju came from a wealthy family and was passionate about traditional culture. After the age of thirty, he devoted himself to the collection and research of traditional Chinese calligraphy and painting art. For this reason, he made a vow: to give what he has received, not to end up as a gift, but to perpetuate his homeland and pass down his legacy. The author of "Spring Tour" is Zhan Ziqian, a famous landscape painting master during the Sui Dynasty. The "Spring Journey" has been passed down in an orderly manner and has always been cherished by collectors, playing an irreplaceable role in the history of Chinese painting. However, its fate has been quite tortuous. Rong Hongjun introduced that the "Spring Journey" was later sold to Beijing Liulichang, and calligraphy and painting merchants publicly demanded 800 taels of gold. After receiving the news, Zhang Boju immediately notified Ma Heng, the director of the Palace Museum at that time. Zhang Boju, as a specially appointed calligraphy and painting committee member of the Palace Museum, believed that the national treasure "Spring Journey Map" was an old collection of the Palace Museum and should be returned to the Palace Museum. However, at that time, funding was scarce and the Palace Museum was powerless, "said Rong Hongjun. He said that Zhang Boju sold his residence and finally proposed a price of 200 taels of gold to snatch up the "Spring Festival Tour". "After the founding of New China, Zhang Boju dedicated the" Spring Festival Tour "to the Forbidden City, allowing the national treasure to return to the embrace of the people." Why did Li Bai write the "Shangyangtai Tie"? Rong Hongjun stated that Mr. Shi Shuqing once proposed the theory of "painting and calligraphy collecting history". That is to say, in addition to its own artistic value, calligraphy and painting works are also important witnesses of historical facts and beneficial supplements to historical literature. For example, Zhang Boju's collection of "Pingfu Tie", which was born over 1700 years ago and holds an important position in the history of Chinese calligraphy. The entire "Pingfu Tie" consists of 84 characters, written in Zhangcao. Zhangcao evolved from Lishu and was formed around the Han Dynasty, mainly popular in the Three Kingdoms and Western Jin Dynasty. However, it was clumsy and elegant, difficult to understand, and was abandoned after less than a hundred years of popularity. "Rong Hongjun said that" Pingfu Tie "is known as a living fossil of Chinese characters, and has important reference value for studying the changes in Chinese characters and calligraphy. The same is true for another precious treasure, the "Shangbalconi Tie". Rong Hongjun said that in the third year of Tianbao, Li Bai ended his Hanlin worship career and was fired by Emperor Xuanzong of Tang under the pretext of "giving gold back to the mountain". Li Bai, who had lost his job and was feeling depressed, invited the poet Du Fu to travel east together.