The introductory wall of Unit 4 "Qingteng & Xuege: Pioneers of Freehand Ink" at the "Brushstrokes Across Centuries" exhibition, explaining how Xu Wei and Bada Shanren shaped the emotional and technical foundations of freehand painting, at the Beijing Fine Art Academy Art Museum, Sept. 19, 2025. [Photo by Liu Ziying/China.org.cn]