It's actually Indonesian, a cracking film though, it really catches you by surprise just how intense it is and you are shattered by the end of it just keeping up with the non-stop action. In a similar vein, Ip Man is brilliant and based on the true story of the Chinese guy who survived WWII and eventually became the guy who trained Bruce Lee, that scene where he steps into the room and challenges ten Japanese martial artists in one hit is just amazing.
On a side note if you You Tube Bruce Lee you see some of the stuff he was capable of is quite scary. Being able to punch someone backwards ten feet by just hitting the person with two fingers holding his hand six inches from them. Mind blowing. Interesting fact as well, if you watch very closely on Enter the Dragon where Bruce Lee drops into the underground lair and is discovered and attacked by a mob of people, at one point he has his back to a room and is attacked by multiple guards, one guard goes at him and get felled with some sticks which clip him in the face (for real) the extra playing that guard was non other than Jackie Chan. He still claims it to be his best movie moment being floored by Bruce Lee as an extra