As far as I know (I could be wrong though), there are no written records of weaponry from the 13th century. On the other hand, ancient Chinese records (of which may remain undisclosed or untranslated to this date) may in the future provide clues or answers. Unless, you may want to go this route which will require significant resources/money (i.e. gaining access and translating ancient records in China which may or may not guarantee answers), then the second alternative may have to be archaeology... of which there are limited materials. As a start, you may want to research on Palawan and Cagayan archaeology, Beyer papers on ancient Philippine-China relations, archeological findings and opinions by Robert Fox ... My 2 cents. I hope this helps.
|