Japanese Yen against the US Dollar falls below 100 yen and it brings both good and bad repercussions. The three counter-actions to the Japanese economy have surfaced：firstly, it covers up the problems of Japanese enterprises; secondly, more energy has been imported by the Japanese than ever before; and thirdly, it will surely lead to global tension. Many of Japan's trade partners have already suppressed their currencies. The consequence would worsen if the Chinese Yuan is also devaluated.