22 episodes. According to relevant public information, the 22 episodes of Invincible Believers, about the 27-day bloody battle of Yunnan Army in Wang Yushan, are high-definition TV dramas broadcast by Youku. Invincible Head is a war film directed by Chen, Laura and Yang Xue. Based on the story of Fan Tianxi, the brigade commander of the ninth brigade of the Yunnan Army, the play tells the story of the heroic battle of the Yunnan Army during the eight-year Anti-Japanese War. The play premiered in east movie channel on August 3rd, 1965.