Introduction to Lao Baldingzi: Foding Mountain, also known as Lao Baldingzi, has always been a battleground for military strategists of all ages. Nurhaci, the emperor of the Qing Dynasty, led his troops to defend Lao Tudingzi for more than two months during the Ming and Qing Dynasties. During the Anti-Japanese War, national hero General Yang Jingyu used Lao Tudingzi Mountain as his base to launch a guerrilla war with the Japanese and puppet troops for four years.