- 上 proper nounabbreviation of 上海ShanghaiShanghai municipality; a major port city and financial center in eastern China
- 交 nounabbreviation of 交通traffictraffic; transportation; communication; the systems and infrastructure used for moving people and goods or transmitting information
- 大 nounabbreviation of 大学 大學universityuniversity; college; a higher education institution that provides teaching and research across various academic departments