Xi's 2019 Dunhuang Questions and the Conservation Response

In August 2019, Xi Jinping visited the Mogao Caves in Dunhuang and asked two questions that now shape the site's management: whether the region was receiving more rain and how to handle rising visitor pressure without damaging the UNESCO-listed grottoes. Fan Jinshi, honorary president of Dunhuang Academy, later said those questions addressed the site's most pressing challenges.

Xi's answer to the tension between access and preservation was explicit: for a World Heritage site, conservation comes first and tourism comes second. He warned that economic benefits should never take precedence over protecting the murals, sculptures and Buddhist art carved into the cliffs on the edge of the Gobi Desert.

Since then, Dunhuang Academy has expanded a real-time monitoring system that tracks temperature, humidity, carbon dioxide and visitor numbers inside the caves, while rainfall and blowing sand are monitored over hundreds of kilometers. Smart doors seal the grottoes when heavy rain or sandstorms approach and open in fine weather to allow fresh air circulation.

The site is also testing a nanoscale sponge technique to lift soot from mural surfaces without damaging pigments, and building high-resolution digital records and online exhibitions so the heritage can be studied and viewed remotely. The Dunhuang work sits inside a broader national push, reflected in Chinese expertise used to restore historical sites in Khiva, Uzbekistan.

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What the Dunhuang Strategy Signals for China's Heritage Policy

Xi Jinping's Cultural Confidence Frame

Xi's visit presented Dunhuang not only as a heritage site but as proof of China's long history of openness along the Silk Road. His statement that a confident civilization can preserve its identity while drawing on other civilizations signals that heritage protection is a national strategic priority, not a local tourism project. That political framing gives Dunhuang Academy authority to prioritize conservation even when commercial visitor income could push the other way.

The Climate and Visitor-Pressure Trade-Off

The operational challenge is real: the site's arid climate helped preserve the murals, but the article reports increased rainfall and summer humidity as threats, alongside steadily rising visitor numbers since 1987. The monitoring center's focus on temperature, humidity and carbon dioxide inside the caves creates a data-driven way to manage access, rather than relying on fixed visitor caps alone. The smart doors extend this logic by using weather warnings to close caves automatically before damage occurs.

Non-Invasive Technology and Minimal Intervention

The nanoscale sponge work in Cave 454 is significant because it aims to remove soot without touching the pigments, a concrete application of the minimal-intervention principle Xi has promoted. High-resolution digital records and online exhibitions serve the same purpose: they preserve a usable record of the murals and manuscripts while reducing physical pressure on the site. If this approach proves effective, it offers a template for other fragile heritage sites facing climate or visitor stress.

The Khiva Project and Soft-Power Diplomacy

Chinese experts helping restore sites in Khiva, Uzbekistan, extends the same heritage framework beyond China's borders. The choice of Khiva, a Silk Road hub, links conservation work to China's broader narrative of cultural exchange and historical connectivity. That turns preservation expertise into a diplomatic asset, even if the article does not detail the budget, scale or results of the overseas restoration.

For Heritage Managers, Tourism Operators and Conservation Suppliers

  • Heritage managers can adopt Dunhuang's automated environmental thresholds — the smart doors already seal grottoes when heavy rain or sandstorms approach — as a tested model for access control at fragile sites.
  • Tourism operators near the Mogao Caves should plan visitor access around the monitoring center's real-time temperature, humidity and carbon dioxide data, because Xi's conservation-first instruction has been implemented through monitoring-linked controls.
  • Conservation technology suppliers may find near-term demand in non-invasive cleaning and high-resolution digital documentation, since Dunhuang Academy is moving its nanoscale soot-removal sponge from laboratory to caves and building remote digital records.
  • Cultural diplomacy teams can extend the Khiva restoration pattern — Chinese experts working with Uzbek counterparts — as a soft-power channel along Silk Road heritage sites.