地处冀东地区的唐山,东南濒临滔滔渤海,北依层峦叠嶂的燕山山脉,雄伟的长城沿着峰脊婉蜒盘旋,把燕山点缀得更加壮丽,西南紧临极目千里的华北平原。这里土地肥沃,矿产丰富,城镇棋布,人口众多。然而,1976年7月28日,对于冀东地区人民来说,这是——个黑色的日子。凌晨,红、白、橙、 Located in the east of Tangshan in Jidong, southeast of the verge of the Bohai Sea, according to the Yulong mountains stacked in the north, the majestic Great Wall along the peak spine spirally Yanshan embellishment even more magnificent, southwest close to the North China Plain extremely high mileage. Here the land is rich, rich in minerals, chess cloth, a large population. However, on July 28, 1976, this was a black day for people in eastern Hebei. Early morning, red, white, orange,