The Long March: What was waiting beyond the snow-capped mountains?

You may have heard of China's Long March, but do you know how physically brutal it was for those revolutionary soldiers?

After crossing Sichuan's snow-capped mountains, the Red Army faced another brutal test: trudging through the endless swamps of Hongyuan's grasslands in freezing temperatures and at high altitudes. These were the sacrifices made by those who fought for the future of New China.