The types of artefacts found in Fort Canning were mainly those of the 14th century Song Dynasty.

This basically tells us that there could be a Song civilization in Fort Canning before. However, as absurd as this sounds, it is impossible that there was a Song Dynasty in Singapore long ago.

Therefore, we can make the assuption that the traders which came to Singapore actually had access to the Song Dynasty items. It is either the Chinese or the Europeans that brought the artefacts over for trade.