Signed Yixing Zisha Teapot – Hand-Engraved "Heart Sutra" (Xin Jing) – Artist Jiang Hai A beautiful contemporary Yixing Zisha (purple clay) teapot, expertly crafted and featuring a complete hand-engraving of the Buddhist Heart Sutra (Xinjing). The calligraphy is executed in a fluid, elegant script that wraps around the entire body of the pot, creating a piece that is both a functional tea vessel and a work of spiritual art. Details: Artist: Jiang Hai (蒋海). The base bears the artist's square seal: "Jiang Hai Zhi Tao" (Pottery made by Jiang Hai). Additional marks are present under the lid and handle. Material: Authentic Zisha clay, likely a high-fired Zhu Ni or Zi Ni blend, known for its excellent heat retention and ability to enhance the flavor of Oolong or Pu-erh teas. Design: Traditional "Duo Zhi" or "Xi Shi" inspired round form with a balanced spout and handle. The interior features a multi-hole "ball" filter for a smooth pour. Condition: Excellent condition. No chips, cracks, or restorations.