Core Viewpoint - The article highlights the historical significance and cultural heritage of Ru porcelain, emphasizing its unique craftsmanship and the revival of traditional techniques in modern times [1][3][5]. Group 1: Historical Significance - Ru porcelain originated during the Northern Song Dynasty and was favored by the imperial court, establishing its status as one of the five famous kilns of the Song Dynasty [3]. - The craftsmanship of Ru porcelain is characterized by its elegant and refined colors, particularly the sky blue and azure glazes, which are highly valued [3][5]. Group 2: Craftsmanship and Techniques - The production of Ru porcelain involves over seventy intricate processes, including material selection, clay preparation, and firing, resulting in a low yield of less than 5% for finished products [5]. - The unique sky blue glaze is achieved through a specific firing process that incorporates ground agate, making Ru porcelain distinct [5]. Group 3: Modern Revival and Innovation - After a period of decline, Ru porcelain production was revitalized post-1949, and in 2011, it was recognized as a national intangible cultural heritage [5]. - The current market includes 484 Ru porcelain production and sales enterprises in Ru City, employing over 5,000 people, with innovative products like Ru porcelain speakers gaining popularity [8].