Shanghai LEVAH ua lub laj kab laj kab hluav taws xob rau lub zog, thov saib cov duab, tseem suav nrog cov hloov pauv. peb muaj peev xwm tsim qauv thiab ua hluav taws xob laj kab hluav taws xob sib dhos rau lub zog sib txawv. tiv tauj peb yog tias koj xav tau.