For two months in early 2020, CGTN filmed the environment inside an intensive care unit (ICU) of Wuhan Red Cross Hospital, following doctors and nurses as they tried to save critical COVID-19 patients.

We met Dr. Huang Xiaobo, a critical care professional from southwest China's Sichuan Province who went to Wuhan to help. The hospital was on the verge of collapse, and Huang took over as the head of the ICU department.  

A year and a half have passed. CGTN caught up with Huang again in Chengdu, provincial capital of Sichuan. Looking back, he still struggles to make peace.