Tens of thousands of ancient pictures carved into the rocks at one of France's most important tourist sites are being gradually destroyed. Scientists and researchers fear that the 36,000 drawings on rocks in Mont Bego in the French Alps are being damaged so rapidly that they will not survive for future generations.

The mountain is scattered (散布) with 4, 000-year-old drawings cut into bare rock. But as the popularity of the site increases ,the pictures are being ruined by thoughtless graffiti (涂鸦). .

Jean Clottes is the chairman of the International Committee on Rock Art. He says, “People think that because the pictures have been there so long they will always continue to be there. But if the damage continues at this rate there will be nothing left in 50 years.”

But experts are divided over the best way to preserve the drawings. Henry de Lumley, director of the Museum of Natural History in Paris, believes that the only way to save the site is to turn the whole mountain into a “no-go” area, preventing the public from going there except on guided tours.

Clottes disagrees. “The measure suggested by Henry de Lumley is the most severe, and while it is the most effective, it is also certain to bring about disagreements from people who live there,” he said. “The site was classified as a historic monument years ago by the Ministry of Culture, and we must do as much as possible to save what is there.

Annie Echassoux, who also worked on researching the site, is alarmed that as the mountain becomes easier to reach — tourists can now avoid the three-and-a-half-hour walk by hiring vehicles - the damage will increase rapidly. She thinks that the only solution is to rope off the area and provide guides. “Money must be provided because the Ministry of Culture has classified this area as a historic site. If we don't take steps, we will be responsible for losing the drawings for the next generation.

There are many historical sites and places in the world that give us insight and evidence of the past civilization. These sites help us learn about our ancestors, their living and culture. These sites can be called common or universal heritage (遗产) of humankind and our world heritage.

These sites from the past civilizations are for all humans. We must live in them today and also pass them on to future generations. They teach us about our past and represent the great achievements of our ancestors and make us proud. World heritage has historical, cultural and economic significance. It has exceptional value and importance for humankind from history, science and arts points of view and must be cared for.

Many UNESCO sites that stand today are under threat. There is a list of thirty sites by UNESCO that are endangered. There are many external factors responsible for damaging the world heritage, some of which are climate change, natural disasters, urbanization and unchecked tourism etc.

With the growing strength of these external factors, it is becoming more and more important to take proper measures to save and preserve these timeless achievements of humankind. There are many communities and organizations in the world which are working to protect these sites. We can work with these organizations, travel agencies, government groups and local communities. We should join them to support their cause. Another way to play our part is to shoulder travel responsibility Tourism can generate funds for the restoration of historical sites but at the same time unchecked tourism can damage them seriously.

The younger generation must preserve the identity of the people who came before them. No matter what is our reach, we should help protect them through effective means. Our every step would count and help in protecting the world heritage sites.

Cultural exchanges and cooperation between Cambodia and China have been developing rapidly since the announcement of the Belt and Road Initiative.

China has donated millions of dollars to help with the restoration of Angkor Wat（吴哥窟）, shouldering more responsibility for world heritage protection. Cambodia's Angkor Wat was listed as a World Heritage site in 1992 and China began the restoration in 2000. Most of the 98 temples were completed by 2013.

Liu Jiang is from the Chinese restoration team. He says the restoration work at the Chau Say Tevoda Temple has been praised by the Cambodian side. Cambodia hopes they can do more restoration work for other historic sites of Angkor Wat in the future. Phay Siphan, spokesman for the Cambodian Council of Ministers, says the successful restoration of the Chau Say Tevoda Temple shows that China is not only influential in the economic and political field, but also in the cultural fields.

Now, the World Heritage Site is a popular destination for Chinese tourists. So far, China has overtaken Vietnam to become the largest source of tourists to Cambodia. Cambodia launched a "China Ready" strategy in 2016, with the aim of attracting more Chinese tourists. The country received about 1 million Chinese tourists last year, and it aims to double the number of Chinese tourists to 2 million by 2020. Many tourists say culture is their reason for visiting Cambodia.

A show called the "Smile of Angkor", which was created by both Chinese and Cambodian artists, has been on show since 2010 in Cambodia. It was sponsored by the Chinese Ministry of Culture and the Cambodian Ministry of Culture. So far, it has been performed more than 1,000 times, and seen by over a million audience members.