An aerial drone photo taken on April 19, 2025 shows the capping of the main structure of Bayi Overpass Station of Jinan Metro Line 4 (Phase I) in Jinan, east China's Shandong Province. With the successful capping of the main structure of Bayi Overpass Station, the construction of the main structure of Jinan Metro Line 4 (Phase I) has been completed. (Xinhua/Guo Xulei)

This photo taken on April 19, 2025 shows the capping of the main structure of Bayi Overpass Station of Jinan Metro Line 4 (Phase I) in Jinan, east China's Shandong Province. With the successful capping of the main structure of Bayi Overpass Station, the construction of the main structure of Jinan Metro Line 4 (Phase I) has been completed. (Xinhua/Guo Xulei)

An aerial drone photo taken on April 19, 2025 shows the capping of the main structure of Bayi Overpass Station of Jinan Metro Line 4 (Phase I) in Jinan, east China's Shandong Province. With the successful capping of the main structure of Bayi Overpass Station, the construction of the main structure of Jinan Metro Line 4 (Phase I) has been completed. (Xinhua/Guo Xulei)

An aerial drone photo taken on April 19, 2025 shows the capping of the main structure of Bayi Overpass Station of Jinan Metro Line 4 (Phase I) in Jinan, east China's Shandong Province. With the successful capping of the main structure of Bayi Overpass Station, the construction of the main structure of Jinan Metro Line 4 (Phase I) has been completed. (Xinhua/Guo Xulei)

An aerial drone photo taken on April 19, 2025 shows the capping of the main structure of Bayi Overpass Station of Jinan Metro Line 4 (Phase I) in Jinan, east China's Shandong Province. With the successful capping of the main structure of Bayi Overpass Station, the construction of the main structure of Jinan Metro Line 4 (Phase I) has been completed. (Xinhua/Guo Xulei)