Bamboo Grove in Rocks， a Yuan Dynasty（1279.1368） hanging scroll by Gu An， ink on paper， 91cm×33.1cm， in the collection of the Palace Museum， Beijing.
Gu An（1289.1364）， a Yuan Dynasty painter， was good at drawing ink bamboo. In the painting are several bamboos upright from rocks with tall， straight body and exuberant leaves. Thriving and vibrant， it is a top-notch one among Gu An’s bamboo paintings.