Excuse me, what plant is this? A painting found in the stream of Lushan Mountain in Jiujiang

Evergreen shrub with broad leaves and Mahonia, 4 meters high. The roots and stems are yellow in cross section and bitter in taste. Pinnate compound leaves alternate, 30 ~ 40 cm long, and the base of petiole is flat and wide. Leaflets 7 ~ 15, thick leathery, broadly ovoid to ovoid-elliptic, 3 ~ 14 cm long and 2 ~ 8 cm wide, with sharp spikes at the top and reflexed edges, with 2 ~ 7 large spikes on each side. Racemes are thick and clustered at the top of branches; Bracts small, dense; Sepals 9, 3-whorled, petals 6, pale yellow, apex 2-lobed, with 2 tight glands near the inner surface of the base; Stamens 6; Ovary superior, 1 room. Berries are ovoid, blue-black when mature, and have white powder. Flowering from March to April, fruiting period 10- 1 1.