People pay homage to Wu Mengchao, a deceased top hepatobiliary surgeon and academician with the Chinese Academy of Sciences, in Shanghai, May 25, 2021. A mourning hall was established at the deceased surgeon's workplace for mourners to pay homage. (Photo: IC)

People pay homage to Wu Mengchao, a deceased top hepatobiliary surgeon and academician with the Chinese Academy of Sciences, in Shanghai, May 25, 2021. (Photo: IC)

People pay homage to Wu Mengchao, a deceased top hepatobiliary surgeon and academician with the Chinese Academy of Sciences, in Shanghai, May 25, 2021. (Photo: IC)

People pay homage to Wu Mengchao, a deceased top hepatobiliary surgeon and academician with the Chinese Academy of Sciences, in Shanghai, May 25, 2021. (Photo: IC)

People pay homage to Wu Mengchao, a deceased top hepatobiliary surgeon and academician with the Chinese Academy of Sciences, in Shanghai, May 25, 2021. (Photo: IC)

People pay homage to Wu Mengchao, a deceased top hepatobiliary surgeon and academician with the Chinese Academy of Sciences, in Shanghai, May 25, 2021. (Photo: IC)

People pay homage to Wu Mengchao, a deceased top hepatobiliary surgeon and academician with the Chinese Academy of Sciences, in Shanghai, May 25, 2021. (Photo: IC)

Flowers are seen to honor Wu Mengchao, a deceased top hepatobiliary surgeon and academician with the Chinese Academy of Sciences, in Shanghai, May 25, 2021. (Photo: IC)

Flowers are seen to honor Wu Mengchao, a deceased top hepatobiliary surgeon and academician with the Chinese Academy of Sciences, in Shanghai, May 25, 2021. (Photo: IC)

People pay homage to Wu Mengchao, a deceased top hepatobiliary surgeon and academician with the Chinese Academy of Sciences, in Shanghai, May 25, 2021. (Photo: IC)