September 11, 2012, Japanese Prime Minister Yoshihiko Noda announced that Japan nationalize Diaoyu Islands. The ”nationalization” of the Diaoyu Islands completely broke Diaoyutai sovereignty fuzzy status quo. The move triggered strong reactions across the Taiwan Strait; Hong Kong; China set off an unprecedented anti-Japanese demonstrations, smashing Japanese stores in mainland China, refused to buy Japanese goods.Why Japanese Prime Yoshihiko Noda make this move? China, Hong Kong, and Taiwan are very consternation, no matter what is the reason, Japan ”nationalization” of the sovereignty of the Diaoyu Islands, It may short-term profit Yoshihiko Noda, but in the long term; Japan, the country may not become for what is cheap, and even Japan, the country may also be a loser.