It is a long scroll of mountains and rivers that has been handed down for thousands of years. It is the eternal back of a dynasty’s rise and fall. It is a treasure of the Palace Museum. It has been the target of literati, poets, royal power and nobles in all dynasties. It has been stolen four times after entering the palace five times. It was not a complete work at the beginning of its creation. The incomplete scroll page actually hides a Little-known mysteries of time and space. 'Along the River During the Qingming Festival', a masterpiece of calligraphy and painting with the highest reputation in China, hides a little-known mystery of time and space. By chance, Zhao Xiaojian from the Palace Museum Academy of Painting and Calligraphy accidentally came across this painting The long scroll of mountains and rivers came to the end of the Northern Song Dynasty, where wars were raging and the wind and rain were raging. In the days of the Northern Song Dynasty, he fought against the evil and the young, fell in love with the princess, went out with the army, and went to battle to kill the enemy... In blood and tears, he experienced a real Jing Kangyuan year.