People take part in a candlelight vigil in commemoration of victims of the Nanjing Massacre on the occasion of the seventh national memorial day at the Memorial Hall of the Victims of the Nanjing Massacre by Japanese Invaders in Nanjing, capital of east China's Jiangsu Province, Dec. 13, 2020. (Xinhua/Li Bo)

People take part in a candlelight vigil in commemoration of victims of the Nanjing Massacre on the occasion of the seventh national memorial day at the Memorial Hall of the Victims of the Nanjing Massacre by Japanese Invaders in Nanjing, capital of east China's Jiangsu Province, Dec. 13, 2020. (Xinhua/Li Bo)

People take part in a candlelight vigil in commemoration of victims of the Nanjing Massacre on the occasion of the seventh national memorial day at the Memorial Hall of the Victims of the Nanjing Massacre by Japanese Invaders in Nanjing, capital of east China's Jiangsu Province, Dec. 13, 2020. (Xinhua/Li Bo)

People take part in a candlelight vigil in commemoration of victims of the Nanjing Massacre on the occasion of the seventh national memorial day at the Memorial Hall of the Victims of the Nanjing Massacre by Japanese Invaders in Nanjing, capital of east China's Jiangsu Province, Dec. 13, 2020. (Xinhua/Li Bo)

People take part in a candlelight vigil in commemoration of victims of the Nanjing Massacre on the occasion of the seventh national memorial day at the Memorial Hall of the Victims of the Nanjing Massacre by Japanese Invaders in Nanjing, capital of east China's Jiangsu Province, Dec. 13, 2020. (Xinhua/Li Bo)