Core Insights - The article explores the beauty of "Tianqing color" as inspired by the lyrics of the song "Blue and White Porcelain," linking traditional Chinese culture with ceramic craftsmanship [2][3] - "Tianqing color" is described as a deep blue hue that appears after rain, characterized by its visual properties and natural optical principles [3][4] Summary by Sections - **Cultural Significance**: The phrase "Tianqing color waits for smoke and rain" reflects a moment of clarity in nature, capturing the essence of a pure and deep blue sky after a rainstorm, which serves as a model for porcelain production [2][3] - **Artistic Pursuit**: The pursuit of "Tianqing color" is highlighted in the Song Dynasty's Ru kiln ceramics, known for their jade-like warmth and subtle blue tones, representing the pinnacle of celadon art [3] - **Color Mechanism**: The article explains that true "Tianqing color" is rare in Ru kiln ceramics, as most exhibit a greenish tone due to the color formation mechanisms involving both chemical and physical processes [4] - **Production Challenges**: It is noted that while "Tianqing color" is inspired by specific weather conditions, the production of ceramics is not suitable during rainy weather due to high humidity affecting kiln temperature and atmosphere stability [4]

Core Viewpoint - The article highlights the significance of Ru kiln in Chinese ceramic history, emphasizing its exquisite craftsmanship and aesthetic value, which has been revived and preserved in modern times through dedicated efforts by researchers and artisans [1][9]. Group 1: Historical Significance - Ru kiln, known for its complex firing techniques and beautiful "sky blue" glaze, is regarded as the foremost among the "Five Famous Kilns" of the Song Dynasty, holding a prominent place in the history of Chinese ceramics [1]. - The Ru kiln is named after Ruzhou, which was rich in the raw materials necessary for porcelain production, reflecting the prosperity of the ceramic industry during that era [5]. - The discovery of the Baofeng Qingliang Temple Ru kiln site in 1987 showcases the peak craftsmanship of the Chinese porcelain industry during the Northern Song Dynasty [5]. Group 2: Craftsmanship and Techniques - Traditional Ru kiln production involves meticulous selection of raw materials, including local kaolin and clay, and the addition of minerals like agate to the glaze, resulting in a unique aesthetic quality [7]. - The firing process, characterized by full glaze and support pin firing methods, allows for a complete glaze coverage, creating the signature lustrous and light-changing qualities of Ru porcelain [7]. - The phrase "after the rain, the sky blue breaks through" epitomizes the aesthetic standard of Ru kiln glazes, elevating its artistic value [7]. Group 3: Modern Revival and Innovation - After the establishment of New China, the Ru porcelain technique was successfully revived in the 1980s, with the sky blue glaze being reintroduced [9]. - In 2011, the Ru porcelain firing technique was included in the third batch of national intangible cultural heritage lists, highlighting its cultural importance [9]. - Modern Ru kiln products have evolved in design and functionality to meet contemporary aesthetic and practical needs, making Ru porcelain accessible for everyday use [11]. - Initiatives such as establishing ceramic towns and intangible cultural heritage studios aim to attract artisans and young people, ensuring the living transmission of porcelain-making techniques [11].