With the military parade， fireworks， the whole nation celebrated the 70th birthday of the Peoples republic of China. Although only a few people could attend the Tian An Men ceremony in person， almost all Chinese could appreciate the live ceremony on TV or by the Internet. Playback videos are also available to those who missed the live show. One might be wondering that， back in the ancient times when modern technology does not exist， how could people see the grand views of significant ceremonies？

閱兵、煙花、舉國同歡……祖國70華誕的盛世凱歌響徹華夏大地。盡管只有極少數(shù)人能夠親臨慶典現(xiàn)場，但幾乎全體國人都可以通過直播收看到同步實況；即使當(dāng)時沒有時間坐在電視機前，手機、電腦上的回放片段也足以滿足大家的觀賞欲。此刻，是否有人想過，在現(xiàn)代科技尚未誕生的古代，人們該如何看到這些盛大的場面呢？