Is Boshan Glass a lie?

No. Boshan District, Zibo City, Shandong Province is known as "the hometown of coloured glaze in China". Boshan glass began mass production in the Tang Dynasty and began to take shape in the Ming Dynasty. By the Qing Dynasty, it had become the center of glass production, and the glass produced was dazzling and crystal clear, which was a traditional handicraft, not from deceiving the people. Since the beginning of glass production, due to the limitation of technology and raw materials, only workshops have been set up in Beijing and Boshan since ancient times.