The "Sound Urn" early warning system developed by Lin Mo accurately predicted Japanese air strikes and helped the Chinese Air Force ambush enemy aircraft. The Japanese army suffered heavy losses and no civilian casualties. Takagi Osaka was defeated and vomited blood. After the war, Lin Mo's reputation was greatly enhanced, and more resources were approved for the coral dam project. The Japanese expert team later discovered through aerial photography and thermal imaging reconnaissance that the Coral Dam area was unnaturally silent, and finally realized that Lin Mo had used a giant camouflage net to cover the entire project. The Japanese are deeply afraid of this "disappeared city", and Lin Mo has begun to build a self-sufficient underground city including commercial streets, schools and other functions under the camouflage network.
