The Moslem world was the biggest Western market, and the porcelain reached there by sea routes since the Silk Road was closed off.
Meanwhile, the Yue celadon (the green porcelain of Zhejiang) continued to be a favorite also.
By so doing, they made a kind of light but strong ceramic that was preferable for artistic and decorative purposes, and it has been in high demand ever since.
Recent archeological finds of porcelain pieces in Han-era sites show that porcelain was produced in the Han Empire, but not much is known about their porcelain production.
The trade was conducted along the Northern Silk Road and by sea routes.