1966年2月的一天,人民大会堂宴会厅内,周恩来总理举行盛大宴会招待一位非洲元首。正在宾主频频举杯之际,二楼朝北的一扇玻璃窗突然破碎。经紧急检查,是一颗子弹击碎了外层玻璃,弹头继续向里飞行,但由于力道已尽,内层玻璃没有破碎。周总理很快得到了报告,但没动声色,宴会继续进行。与此同时,“立即查明案情”的命令被传达下去。经过仔细勘察,外层 One day in February 1966, in the ballroom of the Great Hall of the People, Premier Zhou Enlai held a grand banquet to entertain an African head. Guests are frequently toast on the occasion, a glass window north of the second floor suddenly broken. Upon an urgent inspection, a bullet smashed the outer glass and the warhead continued to fly inwards. However, due to the strength, the inner glass was not broken. Premier Zhou soon got a report, but did not say anything, and the banquet continued. At the same time, the order to “immediately ascertain the merits” was conveyed. After careful investigation, the outer layer