Shanghai is currently experiencing its worst COVID-19 outbreak since the pandemic started in early 2020. The megacity, with over 24 million residents, reports hundreds of confirmed locally transmitted cases and thousands of asymptomatic carriers. The authorities have implemented a two-phase lockdown from March 28 to April 5. It will first target the eastern part of the Huangpu River, followed by the west. About 3,500 health care workers from neighboring Zhejiang and Jiangsu provinces have arrived to assist in conducting mass nucleic acid tests. Join CGTN's livestream to see what is happening on the frontline of the fight against the COVID-19 pandemic in Shanghai.