The origin of porcelain is most commonly attributed to the province of Jiangxi, specifically the city of Jingdezhen. Jingdezhen, often referred to as the "Porcelain Capital of the World," has been producing porcelain since the 10th century. This region's unique geological composition, with abundant kaolin deposits, has been crucial to the production of high-quality porcelain. The soft, white clay from these deposits is ideal for creating delicate and durable porcelain ware.

Historical records and archaeological evidence support the claim that Jingdezhen is the birthplace of porcelain. The Chinese government established the Imperial Kiln in Jingdezhen during the Yuan Dynasty (1271-1368), which was the first official porcelain production facility. This kiln played a pivotal role in the development and refinement of porcelain-making techniques. Over the centuries, Jingdezhen porcelain became renowned for its exquisite craftsmanship, leading to its exportation to various parts of the world.

Data from the Chinese Academy of Social Sciences indicates that Jingdezhen's porcelain production accounted for approximately 50% of the world's porcelain trade during the Ming Dynasty (1368-1644). This dominance in the porcelain market is a testament to the city's unparalleled expertise in porcelain-making. The city's strategic location along the Grand Canal also facilitated the transportation of porcelain to major trading ports, further enhancing its global reach.

The unique characteristics of Jingdezhen porcelain, such as its fine texture, translucent quality, and resistance to thermal shock, have made it a favorite among collectors and connoisseurs worldwide. The city's porcelain artisans have developed a wide range of techniques, including underglaze painting, overglaze painting, and cloisonné, which have contributed to the diverse and intricate designs found in Jingdezhen porcelain.

In conclusion, the province of Jiangxi, with its city of Jingdezhen as the epicenter, is the origin of porcelain. The region's geological composition, historical significance, and unparalleled craftsmanship have cemented Jingdezhen's reputation as the birthplace of porcelain.