Ключевые слова: abstract, alertness, at the edge of, backgrounds, beijing, beijing railway station, blindness, china, chinese culture, chinese language, concepts, concepts topics, contemplation, danger, differing abilities, dividing line, flooring, gap toothed, horizontal, mind the gap, no people, pattern, railroad station platform, railroad track, safety, sayings, short phrase, sign, single line, standing, station, stencil, stop single word, stop sign, striped, subway platform, subway station, subway train, symbol, text, traffic, train vehicle, transportation, travel, waiting in line, warning sign, warning symbol, yellow,