A craftsman makes a colored glaze artwork at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026.
In early summer, the production workshop of "Heshunlu," a time-honored colored glaze brand in Boshan District of Zibo City, east China's Shandong Province, is already swelteringly hot. 
Sun Yunhao and his fellow craftsmen use hollow iron pipes to take molten glass material from a kiln exceeding 1,400 degrees Celsius. They blow, shape, stretch and twist, swiftly forming the material by leveraging its fluidity and ductility. 
Boshan District, where Sun Yunhao lives, is celebrated as the birthplace of Chinese colored glaze with a history of colored glaze-making spanning thousands of years. Boshan colored glaze originated in the Western Zhou Dynasty (1046 B.C.-771 B.C.), flourished in the Han (202 B.C.-220 A.D.) and Tang (618-907) dynasties, and reached its peak in the Ming (1368-1644) and Qing (1644-1911) dynasties. After the founding of the People's Republic of China, Boshan colored glaze entered large-scale production. In 2008, "Boshan Colored Glaze Firing Technique" was inscribed on China's national intangible cultural heritage list.
Born in 1977 into a family of colored glaze artisans, Sun Yunhao studied traditional techniques from an early age under his father, Sun Jijie, a master of Chinese colored glaze art. From the proportions of raw materials to the control of firing temperatures, and from vessel design to thermoforming, years of immersion allowed him to elevate the art of "thermoformed colored glaze" to new heights. Through relentless effort, Sun Yunhao's colored glaze works have won several major industry awards. 
In March 2025, Sun Yunhao was officially recognized as a national representative inheritor of the "Colored Glaze Firing Technique." Building upon the foundation of traditional craftsmanship, Sun has taken the lead in developing courses on the intangible cultural heritage of colored glaze, introduced western glass-making techniques and spatial concepts, and experimented with cross-disciplinary integration between colored glaze and metal, wood, and ceramics. He has so far cultivated 13 national and provincial masters of arts and crafts and over 30 senior technicians.
Nowadays, there are 13 colored glaze production enterprises and 65 related art studios in Boshan. Over 70 percent of their products are exported to European countries, the United States, etc. (Xinhua/Zhu Zheng)

Sun Yunhao (R) discusses an integration invention with a Danish ceramist at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

This photo taken on May 26, 2026 shows a colored glaze artwork being heated in a kiln at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province. (Xinhua/Zhu Zheng)

This photo taken on May 26, 2026 shows colored glaze artworks by Sun Yunhao. (Xinhua/Zhu Zheng)

A craftsman makes a colored glaze artwork at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

A craftsman makes a colored glaze artwork at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

Sun Yunhao introduces a colored glaze artwork he made at an exhibition room of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

This photo taken on May 26, 2026 shows a colored glaze artwork. (Xinhua/Zhu Zheng)

This undated file photo shows the colored glaze mural "Animal World" by Sun Yunhao at the Beijing Zoo Station on Subway Line 4 in Beijing, capital of China. (Xinhua/Zhu Zheng)

This photo taken on May 26, 2026 shows a colored glaze artwork by Sun Yunhao. (Xinhua/Zhu Zheng)

Sun Yunhao (R) discusses an integration invention with an Indian ceramist at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

A craftsman makes a colored glaze artwork at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

Sun Yunhao poses for a photo with his artworks at an exhibition room of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

This photo taken on May 26, 2026 shows a colored glaze artwork by Sun Yunhao. (Xinhua/Zhu Zheng)

Sun Yunhao (L) guides a craftsman in making a colored glaze artwork at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

Sun Yunhao (R) introduces colored glaze artworks he made to a visitor at an exhibition room of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

A craftsman makes a colored glaze artwork at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

Sun Yunhao introduces a colored glaze artwork he made at an exhibition room of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

This photo taken on May 26, 2026 shows a colored glaze artwork. (Xinhua/Zhu Zheng)

A colored glaze artwork is seen heated in a kiln at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

A craftsman makes a colored glaze artwork at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)

A semifinished colored glaze artwork is pictured at a workshop of "Heshunlu" in Boshan District of Zibo City, east China's Shandong Province, May 26, 2026. (Xinhua/Zhu Zheng)