To have extensive knowledge of things from the past; often used as a description for someone well-read in history

Antique objects or ancient artifacts

Bo Gu (1907–1946), also known as Qin Bangxian, an early leader of the Chinese Communist Party.

Traditional Chinese painting or decorative style featuring ancient artifacts

Short for 博古图 bó​gǔ​tú, an illustrated catalog of ancient bronzes or other artifacts