A boat is about to hit the bridge.

That is where Zhang Zeduan’s Along the River During the Qingming Festival begins to reveal its secret. Beneath the great arched bridge, boatmen shout, ropes tighten, a mast is being lowered, and a heavy river vessel struggles through a crowded waterway. Above them, people lean over the railings. On the banks, shopkeepers, porters, travelers, monks, doctors, fortune-tellers, laborers and children press into the scene.

At first glance, the scroll appears to be a celebration of prosperity. Look longer, and it becomes something more unsettling: a portrait of a city so advanced that every part of it depends on everything else not failing.

The painting, now in the Palace Museum in Beijing, is usually attributed to Zhang Zeduan of the Northern Song dynasty. The Beijing scroll is widely accepted by scholars as the earliest surviving version of Qingming shanghe tu, while the National Palace Museum in Taipei describes Zhang’s original as an early 12th-century masterpiece of late Northern Song genre painting, depicting prosperity along the Bian River in Kaifeng, then the Northern Song capital.  

That date matters. This is not the world of Leonardo, Raphael or Michelangelo. In Europe, the early 12th century was still the age of Romanesque churches, sacred metalwork, biblical manuscripts and monumental Christian sculpture. Durham Cathedral was being built between 1093 and 1133 in the Romanesque style. The Cross of Cong, one of the great treasures of Irish church metalwork, was made in 1123 to enshrine a relic of the True Cross. The chevet of Saint-Denis, often associated with the birth of Gothic art, would only be consecrated in 1144.  

The comparison is not meant to diminish Europe. It clarifies the historical shock of the Chinese scroll. When much of Western high art still placed salvation at the center of visual life, Zhang Zeduan placed a city there.

Western readers often reach for the phrase “China’s Mona Lisa.” It is a convenient phrase, but it is wrong in spirit. The Mona Lisa is a face. The Qingming scroll is a system. It is not built around a single human mystery, but around the movement of an entire urban organism.

Within one narrow handscroll, Zhang presents the outskirts, the river, the bridge, the commercial district and the dense life of the city. The central section is organized around the great bridge, where a large boat is trying to pass beneath the structure as its mast is lowered and the crowd gathers in alarm. The whole scroll gives a concentrated image of 12th-century Bianjing at the height of Northern Song urban life.

This is why the painting still feels modern. It is not merely about architecture or costume. It is about logistics.

The Bian River is not a decorative river. It is an artery. Boats enter the city because the capital must be fed, supplied, taxed and sustained. Goods move by water, then by cart, then by shoulder, then by stall and shop. The city exists because movement continues. The scroll’s brilliance lies in showing that prosperity is not a static condition. It is a rhythm: loading, unloading, pulling, steering, selling, buying, waiting, crossing, turning, shouting.

The great bridge is beautiful, but beauty is not the point. The bridge is pressure.

Under it, the painting condenses the problem of a medieval metropolis. Too many people, too many boats, too many goods and too little margin for error meet at one point. The mast is not yet down. The boat is too close. The men on the vessel and the people on the bridge have already seen the danger. The scene is not ornamental animation. It is a near accident.

Palace Museum researcher Yu Hui has read this section not as harmless bustle but as part of a larger pattern of urban anxiety in the Song original. In his interpretation, the scroll contains signs of disorder: a fire-watch tower with no proper guard, slow and negligent officials, the dangerous bridge incident, weak city defense and commercial encroachment into public space. Whether one accepts every part of this reading or not, it is difficult to see the painting as innocent once these details are noticed.

The scroll does not denounce the empire. It observes it too carefully to be merely flattering.

One detail, almost invisible to casual viewers, changes the painting from a masterpiece of urban observation into a document of technical history: the yaolu, or yuloh.

Western viewers may notice the bridge, the crowd, the market stalls and the danger of the passing vessel. Fewer will notice the oar. Yet the large stern oar in the Qingming scroll is not a minor nautical detail. It belongs to the Chinese yaolu, or yuloh, a sculling oar worked by a lateral, rhythmic motion. It does not function like an ordinary rowing oar that is repeatedly lifted from the water. Nor is it merely a steering oar. Properly used, it gives continuous thrust and control.

The China Exploration and Research Society explains that a yuloh boat has a single sculling oar pivoting at the rear, propelled by a left-and-right or push-and-pull rhythm. The same source specifically notes that Along the River During Qingming Festival shows the stern section of a boat with several men maneuvering a large yuloh oar.  

The chronology makes this detail even more important. Western vessels had used steering oars and rowing oars since antiquity, so the comparison must be made carefully. But if the question is narrowed to the scull as a stern oar producing thrust through a transverse motion, the English lexical record is much later: the Oxford English Dictionary dates the noun scull to around 1345–1346, while Merriam-Webster defines scull as “an oar used at the stern of a boat to propel it forward with a thwartwise motion” and gives its first known noun use as the 14th century.  

By contrast, the Chinese yaolu is already documented in Chinese visual and technical history before that. Nanny Kim, in The Journal of Transport History, states that the yaolu is pictorially documented in the 10th century and may have been present much earlier. The Chinese yuloh also entered Western nautical scholarship as a distinct technical subject: D. W. Waters published “The Chinese Yuloh” in The Mariner’s Mirror in 1946 and later “The Straight and Other Chinese Yulohs” in the same journal in 1955.  

The point is not that the West lacked oars. It did not. The point is sharper: Zhang Zeduan’s 12th-century scroll clearly belongs to a Chinese waterborne world in which the yaolu was already mature enough to move large river craft through narrow, crowded, bridge-filled urban canals. In the West, the closest lexical evidence for the stern scull as a named propulsion device appears later. That difference gives the Qingming scroll a technical importance that is often missed.

This matters because the Qingming scroll is often admired for its human abundance, but its deeper intelligence lies in its attention to movement. In a crowded urban canal, sails become useless. Masts must be lowered. Bridges interrupt the waterway. Boats must be slowed, turned, held, released and driven forward. The yuloh is part of the hidden machinery of the city.

The yaolu therefore becomes more than an object. It is evidence.

It tells us that Song urban life depended not only on markets, officials and taxes, but on highly developed waterborne labour. The prosperity of Kaifeng did not float on poetry alone. It moved through ropes, trackers, boatmen, bridge clearances, lowered masts, stern control and the long sweep of the yuloh.

That is where Zhang Zeduan’s genius becomes most apparent. He did not paint technology as a diagram. He embedded it in life. The yuloh is not isolated, labelled or celebrated. It is simply doing its work, as indispensable tools usually do.

The painting also refuses to let power occupy the center. There is no emperor in the scroll. No throne. No palace ceremony. No celestial mandate descending from above. Civilization appears instead through ordinary acts: a man driving animals, a vendor arranging goods, a doctor receiving clients, a laborer carrying weight, a fortune-teller serving anxious examinees, a boatman trying to save a vessel from collision.

The scroll’s range of figures is one of its quiet achievements: gentry, officials, servants, merchants, cartmen, craftsmen, storytellers, barbers, doctors, fortune-tellers, women from wealthy families, monks, children and beggars. Their lives are not equal. Some are idle, some are exhausted. Some command, some carry. The scroll does not erase hierarchy; it records it in motion.

This is one reason the Qingming scroll differs so strongly from many great medieval works of Europe. The Bayeux Tapestry, nearly 70 metres long, tells the story of conquest, succession and war in 1066. It is one of Europe’s great secular narrative works. But Zhang’s scroll is interested in a different kind of drama: not the seizure of a kingdom, but the daily survival of a city.  

One work remembers the making of political power. The other remembers the pressure beneath prosperity.

There is also a strange humility in the artist’s own disappearance. Zhang Zeduan left almost no secure biography. He is known largely through later inscriptions and the survival of the work attributed to him. Unlike Leonardo or Michelangelo, he does not stand before us as a fully documented personality. He almost vanishes into the city he painted.

The painter disappeared. The city remained — not the physical city of Kaifeng, which history would wound and transform, but the city as memory: a living structure of movement, labor, commerce and risk.

The later fate of the painting adds another layer. Qingming shanghe tu became one of the most copied and reimagined subjects in Chinese art. The National Palace Museum notes that around a hundred versions exist today in private collections and major museums around the world, a sign of its extraordinary influence. Columbia University’s Asia for Educators also notes the abundance of later copies and variations, including Qing-dynasty versions that transform the urban world into something more colourful, orderly and courtly.  

That history of copying is not a footnote. It is part of the work’s destiny. For centuries, later artists did not merely reproduce Zhang’s image; they revised the idea of the city itself. In the Song original, the city breathes and strains. In later versions, it often becomes cleaner, brighter, more festive, more governable. The difference is revealing. Copies can flatter what originals expose.

The Song scroll survives because it is not satisfied with surface. It does not simply say: Here is a prosperous capital. It asks a harder question: what must hold together for prosperity to continue?

A bridge must be crossed. A mast must be lowered in time. A boat must be controlled. A shop must be supplied. A road must remain passable. A fire-watch tower must be guarded. Officials must work. Laborers must be paid. Goods must move. People must trust that the city will function when they enter it in the morning.

That is why Along the River During the Qingming Festival still speaks across cultures. It is Chinese in every line, yet its subject is universal. Every great city, from Kaifeng to Venice, London, New York, Hong Kong or Shanghai, lives by the same fragile miracle: millions of separate actions held together just tightly enough to feel like order.

The scroll endures not because it shows a perfect world. It endures because it shows a living one.

It lets us see civilization before it becomes history: crowded, ingenious, commercial, anxious, beautiful, vulnerable and unaware that the future is already approaching from beyond the frame.

Jeffrey Sze is Reichenau’s ambassador for arts, culture and tourism and chairman of Art Habsburg. He is also general partner of Archduke United LPF, focusing on fine-art research, collecting and the digitalization of cultural assets.