When was the first set of rice paper stamps issued in China

The first set of rice paper stamps was issued on May 15, 2010 in China. Titled "Ancient Chinese Calligraphy ---- Running Script", the set of six stamps, with a face value of 1.2 yuan, featured famous works such as the Lanting Preface, the Manuscripts of Rituals for Nephews, and the Cold Food Poem of Huangzhou. The issuance of this set of stamps marks the beginning of China Post's adoption of rice paper as a special material to showcase the charm and uniqueness of the ancient Chinese art of calligraphy. The choice of rice paper as the material for stamps reflects China Post's emphasis on traditional culture and pursuit of artistic value. The issuance of this set of rice paper stamps is of historical significance and provides a valuable collection for stamp collectors and art lovers.