１９３５年１０月１９日，中共中央率领中央红军历经千险万阻到达陕北苏区吴起镇。２０日上午保安游击队政委兼队长张明科接到秘密联络员送来的鸡毛信：“毛泽东在吴起镇，速来，千万勿误。”张明科接到鸡毛信后，马上赶到吴起镇，在指挥部聆听了毛泽东关于中央红军长征情况的 On October 19, 1935, the CPC Central Committee led the Central Red Army to reach Wuqi Town in the Soviet area of ​​northern Shaanxi after thousands of thousands of difficulties. On the morning of the 20th Security guerrilla political commissar and captain Zhang Mingke received a secret liaison officer sent feather letter: “Mao Zedong in Wuqi town, speed, do not mistake.” Zhang Mingke received feather letter, immediately rushed to the town of Wu Qi At the headquarters, he listened to Mao Zedong’s case about the Long March of the Central Red Army