13. Japanese Invasion and the Nanjing Massacre (1937)
The Japanese invasion during the Second Sino-Japanese War unleashed unimaginable suffering across China. One of the darkest episodes was the Nanjing Massacre, where Japanese troops killed hundreds of thousands of civilians and soldiers, committing widespread atrocities. This brutal occupation deeply scarred the Chinese psyche but also galvanized fierce resistance. The horrors of war underscored the urgent need for unity and fueled a renewed determination to reclaim national dignity.
