At the Central Trade Hall in the city of Anguo there are hundreds of stalls selling unusual products - tree bark, wild flowers and roots.
Many of them have unusual names, such as Baikal Skullcap and Pagoda Tree.
These products are all used in traditional Chinese medicine and are on sale at the country's largest market for medicinal herbs.
It is an ancient industry that is currently grappling with an age-old problem: inflation.
Medicinal herbs have on average nearly doubled in price over the last year. Some particular ingredients have gone up even more.