In China,the thinking of maintaining national security originates from the time before Qin Dynasty.
中国维护国家安全的思想认识起源于先秦时期。
参考来源 - 先秦国家安全思想初探·2,447,543篇论文数据，部分数据来源于NoteExpress
As a special kind of image in the time before Qin Dynasty, the image of assassins in the Biographies about the assassins in Shi Ji attracts people's attention and has been disputed for a long time.
《史记。刺客列传》中的刺客形象作为中国先秦史上的一个特殊群体，长期以来引人关注，也多有争议。
It reflects the people's attention in tourism and their colourful tourist activities in the period before Qin dynasty, as well as the ways and the circumstances at that time.
它体现了先秦人们对旅行的重视，也反映了先秦时期人们旅行的丰富内容，还记载了当时人们旅行的方式和环境。
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