[quote="xesy, post: 5860402, member: 157435" China does not want ASEAN as a whole, so of course China makes friend to some countries, while make enemies of others.[/quote]
When Western interest groups manipluated/attacked ASEAN currencies which created the 1997 financial crisis in ASEAN, it was China that stood together with ASEAN to fend off these attacks.
China also wanted strength ASEAN together and that's why it negotiated a free-trade deal with all these nations together as a whole;the ASEAN. As a result, China and ASEAN grew a lot in the last decade. But now, there are countries with other interests are negotiating free-trade deals with only certain countries in ASEAN, trying to do a Divide and Conquer on ASEAN.