earlybird

Since the latest explanation by the Hong Kong scientist confirming the speed of light constant upholding Einstein's speed of light postulate, which states that nothing can go faster than the speed of light and conversely light can go no slower than its constant speed. My question for anyone (or obviously an expert) is how can the speed of light be explained within a black hole? If precisely the speed of light according to the viewers stance arrives at a "dead stop" once it is captured by the black hole's grasp. Anyone please explain this so it can make perfect sense (in words and examples please) to the mathematically ignorant and for that instance to everyone.