Open book with a drawing of a plant with green leaves and red flowers…

Black and white photo of a young man with no shirt

Flag of the Communist Party of China

Black and white drawing of a house in the woods

Black and white drawing of an alligator in the water surrounded by trees

Chinese scroll painting of a mountain landscape with a river in the…

Black and white drawing of a telescope

Chemical structure of a peptide molecule on a white background

Black and white drawing of a fish with its mouth open