Song/Yuan Dynasty The flat elongated body with two waisted sections on both sides, lacquered black, the surface slightly ice-cracked and worn due to age, the top with thirteen inlaid-gold studs (hui), seven strings threaded through tasseled white jade pegs (qinzhen) running over the top and tied to either of the two button-like jade pegs (yanzu) on the back, with two rectangular openings, the large one termed 'dragon pool' (longchi) and the smaller 'phoenix pond' (fengzhao), the underside bearing an inscription, box. 126.5cm (49 3/4in) long x 21cm (8 1/4in) wide (2).