During the Xuanhe period of the Northern Song Dynasty, the painter Zhang Zeduan completed the painting "Along the River During the Qingming Festival", and his soul entered the scroll with the ink, becoming the only soul guardian in the painting. Since then, he has been closely associated with the scroll in life and death. When the painting is safe, he wakes up, and when the painting is damaged, he returns home. During the changes of dynasties, he has guarded it as a mortal for thousands of years. From the wars of Jingkang to the displacement of the Jin and Yuan Dynasties, from the disputes in the Ming Dynasty to the suppression of the Qing Dynasty, to the southward migration of the Republic of China and the stability of modern times, he transformed into a conservator and restorer of various dynasties, hiding in the world and silently protecting paintings. Whenever the scroll was torn by war, eroded by insects, altered by imperial power, and worn away by the years, he would turn into smoke and write in the painting, using his unique memory to restore every scar and mend the Bianliang fireworks crushed by time. Everyone in the world reads paintings, but no one knows that the soul is hidden in the paintings; everyone in the world discusses history, but no one understands his thousand years of loneliness. What he guards is not just a painting, but also a piece of human truth that will never fade. It was not until modern times that a child accidentally caught a glimpse of the brush moving slightly in the corner of the painting, and this watch that spanned thousands of years finally had a slight echo.
