This is a ceramic tea set, characterized by a floral design and a curved spout. The seal in the image is likely a rakkan (inscription) pressed on the bottom of a Yixing Zisha teapot (gikosishako), produced in Yixing City, Jiangsu Province, China. These types of seals usually indicate the name of the artist or the kiln, and are useful for identifying the work. They are often written in seal script, and require specialized knowledge for accurate interpretation. From search results, it can be confirmed that many Zisha teapot rakkan are inscribed with "China Yixing" or the artist's name. However, the rakkan on Zisha teapots can vary depending on the period and production method, even for the same artist, and there are also many imitations. Therefore, it is difficult to identify the artist or authenticity based on the image of the rakkan alone. *This is based solely on the seal, so it is recommended for those with more expertise. Thank you for viewing.