Caixin China Biz Roundup: Contaminated Factory Exhaust Sparks Concerns of Infectious Disease Outbreak in Northwest China

Today’s episode discusses: More than 1,000 residents have been tested for brucellosis since the infectious disease was confirmed in the city of Lanzhou; China’s tech sector raked in $155 billion in revenue in the first 11 months of 2019; why China's biggest online travel agency is eyeing a secondary listing in Hong Kong.