A visitor takes a photo at a railway photo exhibition during an expo themed on Chinese railway culture in Beijing, capital of China, Sept. 27, 2025. An expo displaying collections of items on Chinese railway culture kicked off here on Saturday, showcasing the development and achievement of Chinese railway. (Xinhua/Li He)

Visitors watch a locomotive sounding the whistle during an expo themed on Chinese railway culture in Beijing, capital of China, Sept. 27, 2025. An expo displaying collections of items on Chinese railway culture kicked off here on Saturday, showcasing the development and achievement of Chinese railway. (Xinhua/Li He)

People visit a railway old objects exhibition during an expo themed on Chinese railway culture in Beijing, capital of China, Sept. 27, 2025. An expo displaying collections of items on Chinese railway culture kicked off here on Saturday, showcasing the development and achievement of Chinese railway. (Xinhua/Li He)

People visit a Chinese railway stamp exhibition during an expo themed on Chinese railway culture in Beijing, capital of China, Sept. 27, 2025. An expo displaying collections of items on Chinese railway culture kicked off here on Saturday, showcasing the development and achievement of Chinese railway. (Xinhua/Li He)

People view locomotive models during an expo themed on Chinese railway culture in Beijing, capital of China, Sept. 27, 2025. An expo displaying collections of items on Chinese railway culture kicked off here on Saturday, showcasing the development and achievement of Chinese railway. (Xinhua/Li He)

People visit a Chinese railway stamp exhibition during an expo themed on Chinese railway culture in Beijing, capital of China, Sept. 27, 2025. An expo displaying collections of items on Chinese railway culture kicked off here on Saturday, showcasing the development and achievement of Chinese railway. (Xinhua/Li He)

People visit a railway old objects exhibition during an expo themed on Chinese railway culture in Beijing, capital of China, Sept. 27, 2025. An expo displaying collections of items on Chinese railway culture kicked off here on Saturday, showcasing the development and achievement of Chinese railway. (Xinhua/Li He)