海孔洞位于今重庆市綦江区万盛丛林镇海孔村(抗战时期属于南川县)。抗战时期,它曾是“国民政府航空委员会第二飞机制造厂”最好的庇护所——因其隐蔽的奇异地形,飞机厂免遭日机三番五次的轰炸。作为飞机厂,这里还诞生了中国人自己设计、制造的第一架军用运输机——“中运一号”。实际上,谈到抗战时期的中国航空业,就一定要谈到“国民政府航空委员会第二飞机制造厂”(以下简称第二飞机制造厂)。它叫响了中华民族对蓝天的强烈向往和抗击外来侵略的铮铮誓言。在抗战的艰难岁月里,不管是资源的极度匮乏,还是日本人的轮番轰炸,都丝毫不能阻止它前进的步伐。它躲在重庆大山深处的 Hai hole hole is located in Qijiang District of Chongqing Wansheng jungle town Haokong Village (Nanchuan County during the war of resistance against Japan). During the War of Resistance Against Japan, it was once the “National Aviation Administration’s second aircraft manufacturer.” “The best shelter.” Because of its hidden, strange landscape, the aircraft factory was shelled from bombing in time. As the aircraft factory, there was also the birth of the first military transport aircraft designed and manufactured by the Chinese themselves - “One of China Shipping”. In fact, when it comes to China’s aviation industry during the war of resistance against Japan, it must be mentioned that “the second aviation manufacturing plant of the National Government Aviation Commission” (hereinafter referred to as the second aircraft manufacturing plant). It rang the strong desire of the Chinese nation to fight against the blue sky and the clank vow. In the difficult years of the war of resistance, both the extreme scarcity of resources and the bombing of the Japanese people did not stop the pace of its progress. It hides in the mountains of Chongqing