Passengers are seen on the G9 bullet train departing from Beijing to east China's Shanghai, at Beijing South Railway Station in Beijing, capital of China, June 30, 2026. The Beijing-Shanghai High-speed Railway marked the 15th anniversary of its operation on Tuesday. Over the past 15 years, more than 2.22 million trains have operated, safely handling over 2.3 billion passenger trips. (Xinhua/Zhang Chenlin)

The G9 bullet train departs from Beijing South Railway Station, heading to east China's Shanghai, in Beijing, capital of China, June 30, 2026. The Beijing-Shanghai High-speed Railway marked the 15th anniversary of its operation on Tuesday. Over the past 15 years, more than 2.22 million trains have operated, safely handling over 2.3 billion passenger trips. (Xinhua/Zhang Chenlin)

The G9 bullet train departs from Beijing South Railway Station, heading to east China's Shanghai, in Beijing, capital of China, June 30, 2026. The Beijing-Shanghai High-speed Railway marked the 15th anniversary of its operation on Tuesday. Over the past 15 years, more than 2.22 million trains have operated, safely handling over 2.3 billion passenger trips. (Xinhua/Zhang Chenlin)

Passengers are seen on the G9 bullet train departing from Beijing to east China's Shanghai, at Beijing South Railway Station in Beijing, capital of China, June 30, 2026. The Beijing-Shanghai High-speed Railway marked the 15th anniversary of its operation on Tuesday. Over the past 15 years, more than 2.22 million trains have operated, safely handling over 2.3 billion passenger trips. (Xinhua/Zhang Chenlin)

Passengers are seen on the G9 bullet train departing from Beijing to east China's Shanghai, at Beijing South Railway Station in Beijing, capital of China, June 30, 2026. The Beijing-Shanghai High-speed Railway marked the 15th anniversary of its operation on Tuesday. Over the past 15 years, more than 2.22 million trains have operated, safely handling over 2.3 billion passenger trips. (Xinhua/Zhang Chenlin)