You've probably heard of the ancient Tea Horse Road. But have you ever wondered about the people who traveled it?

For centuries, caravans carried tea, salt and goods across the rugged mountains of Southwest China. Their journeys often lasted for weeks or even months, taking them through steep passes, harsh weather and dangerous trails.

To sustain them on the road, they relied on simple, portable foods such as shuisubing, a pastry made to withstand long journeys.

The caravan traders could hardly have imagined that this humble travel snack would one day become one of Lijiang's most beloved local specialties.

Join China Daily reporter Yan An as she follows in their footsteps and discovers how a simple pastry became a lasting taste of Tea Horse Road history.