Created by grinding china-stone, mixing it with china-clay and then baking until translucent, the technique was developed during the Tang Dynasty, but perfected in the Ming era. An imperial porcelain factory was created in Jingdezhen in 1368 to produce wares for the imperial court. Though various colors might be featured on a piece, the classic Ming porcelain was white and blue. The Jingdezhen factory became the source of porcelain exports that were extremely popular in Europe, which hoped to replicate the form.