This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
The Old Flag of Tsinghua triangle. en The Old Flag of Tsinghua triangle zh google hk id PmiOHknGAkC printsec frontcover dq AD BF source bl ots LmrfcP sig FsbbhsWjOJmAHrvQkawcZoRo hl zhCN ei rNKTNbLNKvgOQvtHjDw sa oi bookresult ct result resnum ved CBcQAEwAA onepage false Tsinghua University Tsinghua University PDold