According to the postal code database, Qingdao Agricultural University is located at No.700 Changcheng Road, Chengyang District, Qingdao, Shandong Province, with the postal code of 266 109. The first two digits 26 represent Shandong Province, the third digit 6 represents Qingdao, the fourth digit 1 represents Chengyang District, and the last two digits 09 represent No.700 Great Wall Road, No.204 National Road and No.3 National Road 204, etc.