The important policy of China is expansionism with the help of which China wants to gain its dominance. So , China is  directly messing with America for this ideology. The biggest weapon of China for expansion is investment and debt trap. First , They provide loan to the poor countries after that takes interest and if the countries are not able to pay , they captures their strategic locations and important resources .  China captures important Geo - strategic locations of these countries to spy on enemy countries. Examples are - Hambantota port of Sri Lanka , Gwadar Port of Pakistan . So , the investments in poor countries are going to be the main weapon of China and in the name of development and constructing infrastructures , China trap the poor and underdeveloped countries and establish its dominance on them. For investing in these countries , economic strength is required and nowadays China is one of the very few countries having less economic pressure. thus , there was not any solution to counter China but now a country Japan is going to stand against China. Japan has already proved its power in past that how a small country can defeat a large country like Russia. They captured many parts of east Asia in the past. Japan is a economic power having 4 decades of trade surplus economy . And former PM of Japan , elected in 2006 and 2012 , Shinzo Abe changed Japan's policy of increasing military infrastructure. 




Because of recent response of Japan , it is clear that Japan is fully prepared to counter China. As recently , when Japan discarded its take on one China policy and separated Taiwan from the China map and chapter of China in annual defense white paper , and also added that if China plans to harm Taiwan then Japan and America will take stand against China. Japan included ' Taiwan's sovereignty ' .  Japan also understands that if China captures Taiwan , it will be easy for them to gain influence in south China sea . Also , with India Japan is offering investments to Japan to recover Sri Lanka from China's debt trap . In Bangladesh too , China was thrown out to develop port and the same was given to Japan . 

America also seek help of Japan to increase Japan's influence to central America and Caribbean countries as they are anti America and pro China . China is having high influence in many countries of that area. As due to Anti America sentiments , America is not able to defend its surrounding and investing in these countries now Japan is said to  invest , develop infrastructure and expose China 's policy of expansion . 

So , altogether Japan is completely countering China 's policy .  


you can also read : Japan rejects one China policy