This picture taken on July 13, 2024 shows a view of mountains in Davos, Switzerland. (Xinhua/Lian Yi)

This picture taken on July 13, 2024 shows the scenery of Davos, Switzerland. (Xinhua/Lian Yi)

This picture taken on July 12, 2024 shows the scenery of Davos Lake in Switzerland. (Xinhua/Lian Yi)

This picture taken on July 12, 2024 shows the scenery of Davos in Switzerland. (Xinhua/Lian Yi)

People paddle board on Davos Lake in Switzerland, July 12, 2024. (Xinhua/Lian Yi)

This picture taken on July 12, 2024 shows the scenery of Davos Lake in Switzerland. (Xinhua/Lian Yi)

This picture taken on July 12, 2024 shows a train running through the mountains in Davos, Switzerland. (Xinhua/Lian Yi)

This picture taken on July 13, 2024 shows a lake on the mountain of Davos, Switzerland. (Xinhua/Lian Yi)

This picture taken on July 13, 2024 shows Davos Congress Center in Davos, Switzerland. (Xinhua/Lian Yi)

This picture taken on July 12, 2024 shows the scenery of Davos Lake in Switzerland. (Xinhua/Lian Yi)

(责任编辑：综合)