Why can The Riverside Scene at Qingming Festival be a masterpiece handed down from generation to generation?

This painting has survived to this day because it has a very obvious historical significance, and it completely shows the style of Bianjing, the capital of the Northern Song Dynasty. After enlarging the part of The Riverside Scene at Qingming Festival, we can clearly see the details of people's lives in the Northern Song Dynasty, and even make people think that they have returned to the Northern Song Dynasty. Having said that, you have to admire the painter's painting skills, which is worthy of the author's ten years of hard work.