While workers are busy loading containers on big trucks at Tianjin's Binhai New District Port, a cold-chain logistics base in the district hasn’t seen a single truck come in or out in the past week, according to a dealer working nearby. After new COVID-19 confirmed cases were found in the cold-chain food logistics industry, Tianjin now tightens its COVID-19 control measures as well as strengthens customs inspection. Photos: Li Hao/GT