Merely my opinion
Malaysia normally gets the chance of winning matches by scoring from freekicks. This proves that our playes don't have the capability to score by shooting. Just check the statistics.
So, train more by dribbling and shooting. Don't mention Asian cup, if we just rely from freekicks, Asean cup will be far from reach.
By the way, by watching Malaysia representitives playing football from matches from life telecast and from the stadium myself. I think they have poor passing skills. They can't even compare with second division players from UK. If their defending skills is bad, it's acceptable but just look, they lose the ball every one time they pass once.

I don't think climate is the factor. Just look at Brazil, they are located near to the equator like us, they can be world champion!

Praises for Malaysia because they thrashed phillipines 4-0. But, don't get too over confident, because we are just facing weak opponents.
Passes of Malaysia is still poor, they cant even pass more than 3 times consecutively, more training needed. Lack of training.

cant dribble,and make good passes, even 2nd division in eng is better!

sigh, I went to BJ to watch the match,Malaysia really needs to catch up, no kidding, blood change needed