Chocolate's journey from Germany to China

Ever wondered how chocolate gets all the way from Germany to the supermarket shelves of China? The answer is the China-Europe block train.

The freight service has been running since 2013, and stretches 10214 kilometers from Hamburg in Germany to Zhengzhou, the capital of Henan province.

The round trip takes about two weeks, with the cargo often including food and beverages, automobiles, medical equipment, and engineering machinery.