It's food and it's on a train…Luke Nguyen is aboard the Reunification Express in Luke Nguyen's Railway Vietnam.In the 10 part series he explores Vietnam's history and culinary delights travelling from Ho Chi Minh City in the south to Sa Pa in the north.Luke Nguyen said: "I first travelled Vietnam by train when I was 19 years old, and was blown away by the chaos, beautiful landscapes and exceptional food I discovered. It was a joy to return to the country I love so much. This series combines my passion for food, travel, trains and the Vietnamese people. Every time I go back I unearth more secrets from this rich culture and understand more about my own family's history."