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This film (drama)Also known as掩护，is aMainland ChinaProducerbeauty live，At2011Released in year 。The dialogue language isMandarin Chinese，Current Douban rating6.8(For reference only)。

In 1945, World War II came to an end, and the ambitions of Japanese imperialism were finally crushed. However, the troubled Chinese nation had not yet reached the end of its victory. As external enemies retreated, civil war erupted. To gain the initiative in the war, the Kuomintang and the Communist Party sent spies to obtain crucial intelligence from each other in addition to direct confrontations. During this process, a scholar named Gao Zhi Hua (played by Lu Yi) assumed the alias Meng Zhao Yang and successfully infiltrated the Military Intelligence Bureau's communications department. During this time, he met the mathematical genius Gong Li (played by Liu Tao), who had returned from abroad, but her identity raised suspicions. However, as their relationship deepened, Gong Li gradually dispelled her hostility towards him. On the other hand, the senior officials of the military intelligence remained relentless in investigating Meng Zhao Yang's identity. As the investigation progressed, Meng found himself in peril, while his lover in Yan'an, Kang Jing Jing, took on the heavy responsibility of clearing obstacles in his path. In the trials of blood and fire, Meng continuously transmitted intelligence critical to the revolution's victory to the rear...