After decades of decline, overnight trains are making a comeback in Europe and the United States as a more sustainable way to travel than flying. But in China, they never went out of vogue. The ...

A bullet train passes through Mianyang, Sichuan province, during a trial run on Tuesday. The Xi'an-Chengdu High-Speed Railway is expected to formally open next week. CAO NING/FOR CHINA DAILY The trial ...