A group of children prepare to present flowers in tribute to deceased national heroes at Tian'anmen Square in Beijing, capital of China, on Martyrs' Day, Sept 30, 2020. (PHOTO / XINHUA)

Representatives of various sectors of society attend a ceremony to pay tribute to deceased national heroes at Tian'anmen Square in Beijing, capital of China, on Martyrs' Day, Sept 30, 2020. (PHOTO / XINHUA)

Representatives of various sectors of society attend a ceremony to pay tribute to deceased national heroes at Tian'anmen Square in Beijing, capital of China, on Martyrs' Day, Sept 30, 2020. (PHOTO / XINHUA)

Representatives of various sectors of society attend a ceremony to pay tribute to deceased national heroes at Tian'anmen Square in Beijing, capital of China, on Martyrs' Day, Sept 30, 2020. (PHOTO / XINHUA)

A ceremony to pay tribute to deceased national heroes on Martyrs' Day is held at Tian'anmen Square in Beijing, capital of China, Sept 30, 2020. (SHEN HONG / XINHUA)

A ceremony to pay tribute to deceased national heroes on Martyrs' Day is held at Tian'anmen Square in Beijing, capital of China, Sept 30, 2020. (SHEN HONG / XINHUA)

A ceremony to pay tribute to deceased national heroes on Martyrs' Day is held at Tian'anmen Square in Beijing, capital of China, Sept 30, 2020. (SHEN HONG / XINHUA)

Representatives of various sectors of society attend a ceremony to pay tribute to deceased national heroes at Tian'anmen Square in Beijing, capital of China, on Martyrs' Day, Sept 30, 2020. (PHOTO / XINHUA)

Honor guards lay floral baskets in front of the Monument to the People's Heroes at Tian'anmen Square in Beijing, capital of China, Sept 30, 2020. (SHEN HONG / XINHUA)