The Indonesians are well known for their reds.
I know quite a number of friend's dads rent ponds in farms (over here in Singapore) to breed arowana. They told me Singapore / Malaysian Peninsular have soil (as breeding are done in mud ponds) more suitable for Goldens / RTGs. Quite a number expressed difficulty to breed their Reds over here.
The PT. Wajok is a great example of quality Indonesian Reds.
Having said that, I feel that it's very difficult to breed Reds in China. They don't even breed well in the neighbouring countries (tropical climate), much worse when the Chinese try to breed them in a temperate country