Vases with raised leaf veins, sometimes with a lobed, lotus leaf-shaped lid, are referred to as heyeguan ("lotus leaf-shaped jar"). The surface of these jars are often plain (WW 1987.2: 72), but they were decorated with raised, lotus leaf veins (WW 1982.4: 69), dragon motifs (Shanghai Mus. 1991 vol. II: pl. 98), or carved in floral patterns (Ministry of Culture and Information 1983: pls. 42-3). A specimen of the same shape with pale-blue glaze from a 1308 tomb provides reliable evidence regarding the time range for production of such jars (WWZLCK 1987 vol. 10: 200). This jar has a short neck, compact body, and deeply concave base.