地球的一个不眠之夜
Strange things were happening in the countryside of northeastern Hebei. For several days，the water in the village wells rose and fell，rose and fell. There were deep cracks that appeared in the well walls. At least one well had some smelly gas coming out of it. Chickens and even pigs were too nervous to eat，and dogs refused to go inside buildings. Mice ran out of the fields looking for places to hide，and fish jumped out of the water. At about 3：00 a.m., on 28 July 1976，bright lights were seen in the sky outside the city of Tangshan and loud noises were heard. But the city’s one million people were asleep as usual that night.
