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The reason of Notre Dame's fire is revealed. It's a pity to see the spire of Notre Dame's roof after

The fire at Notre Dame in Paris on April 15 made the world feel sorry for it, and international organizations have donated money. Notre Dame officials recently released aerial photos and videos of the fire in Notre Dame online. It can be seen that the wooden roof and spire of Notre Dame are almost completely burned, leaving only many dark holes. What was the effect of the fire?

Notre Dame in Paris has a history of 850 years. The roof is almost made of oak, making the fire hard to put out. The reconstruction of Notre Dame is also quite large. The insurance company estimates that about 1300 trees may be needed for reconstruction, almost equal to a small forest. According to the president of the French Cultural Heritage Foundation, France does not have enough huge timber to import from neighboring countries.

Preliminary investigation of the fire suggested that the lower part of the steeple might be the initial fire point. Police have asked at least 30 Notre Dame staff, and the maintenance workers will be investigated. According to foreign media reports, the Notre Dame was carrying out routine reinforcement works, and the outside of the minaret was surrounded by a huge scaffold. The workers plan to install a lift on the top, which may cause the wires to go out of order in the process.

John David, a stonemason at York Cathedral in the UK, said the restoration team must first remove the burned scaffold. Fortunately, the main building structure is safe for the time being. The north and South bell towers, the largest rose windows, the statue of the virgin and the mourning child, the crown of Jesus bramble and other precious cultural relics are all in good condition.