peking university

academic ancient arch architecture art asia autumn background beautiful beijing blue boya boyata bridge buddhism building campus china classroom colorful construction culture design driedup dynasty education foliage graduate green happy historic history holiday inverted lake landmark landscape leaves levels look marble natural new old outdoor outlook palace peking pillar pku pointed professor reflection religion roof rough school sky spring stone student summer terrace the tower tradition traditional travel tree trees triangle university unnamed view water weiming white winter yuanmingyuan