[arsenal168]

China has toughen its stand against Singapore. 9 SAF armoured vehicles(Terrex) are detained in Hong Kong port. China's spokesperson said they are against any form of military co-operation or exercises between Taiwan and the countries that have official ties with PRC. However, SAF has been training in Taiwan for many decades and China has all the while closed both eyes to that reality. So why now the hostile reaction??
It probably has got to do with what PM Lee said in the August state visit to USA.

".....So I hope that the U.S. will continue its rebalancing and its active engagement in the region. It is something which many, many countries in the region support and hope will strengthen. They don’t all express it in the same way. Some of them find it more implicit than others. Singapore has nailed our colors to the mast and we have stated our position unambiguously for many years. It’s a good thing; it needs to continue. It’s good not just for the region, where millions of souls depend upon it, but it benefits the United States tremendously, because you’re securing peace and stability in the Asia Pacific which otherwise could be a very troublesome part of the world for you...."

China is offended for sure.