1. Explain the artistic achievements of Dunhuang murals. The frescoes in Dunhuang are an important part of the grottoes. They were built in the 4th century and evolved from the 5th century to the 14th century. These murals are distributed in the 27th to 79th caves of the Mogao Grottoes in Dunhuang. The content covers Buddhism, Taoism, secular culture and many other aspects. The artistic achievements of Dunhuang murals are extremely rich, among which the most famous is Buddhist art. These murals depicted Buddhist classic stories and characters, such as the Lord of Shewei in the Nirvana Sutra, the life experience of Buddha, and various characters in Buddhist scriptures. These murals were drawn using traditional Dunhuang mural techniques, mainly using mineral paint to draw bright colors, exquisite pictures, and unique styles. 2. On the artistic style and characteristics of the Tang Dynasty figure painting? Tang Dynasty was an important period of ancient Chinese culture and also an important period of ancient Chinese figure painting. The artistic style and characteristics of the Tang Dynasty figure painting were mainly manifested in the following aspects: The artistic style of figure painting in the Tang Dynasty paid attention to the image and expression of the characters, and pursued realistic and vivid effects. In the Tang Dynasty, the artists used a lot of details and dynamic descriptions to highlight the characteristics and personality of the characters, making them more three-dimensional and real. The artistic style of figure painting in the Tang Dynasty emphasized the dynamic and aesthetic effect of the figure's posture and movements. In the Tang Dynasty, painters paid attention to the posture and movement of the characters, and through the actions and postures of the characters, they expressed the characters 'personalities and emotions, making the characters more vivid and interesting. The artistic style of the Tang Dynasty figure painting also emphasized the decorative nature of the characters and the pursuit of uniqueness and uniqueness. In the Tang Dynasty, painters paid attention to the decorative and aesthetic features of the characters. Through the details of the characters 'clothing, hairstyle, makeup, etc., they expressed the characters' personalities and characteristics to make the characters more unique and beautiful. 3. Explain Chen Hongsui's artistic achievements and their influence.