清华大学藏战国竹简《系年》的发表,对研究西周至战国初期的历史具有十分珍贵的价值。本文以《系年》第二章其中关系到两周之际历史的材料进行考察,以增加人们对此段历史的认识。关于西周的灭亡,在传世文献中最早的记载见于《国语》。《国语.晋语一》晋大夫史苏言:“周幽王伐 The publication of the ”Year of the Bamboo Slips“ of the Tibetan Warring States Period at Tsinghua University is of great value to the study of the history of the Western Zhou Dynasty and the early days of the Warring States Period. This article examines the materials of the second year of the ”Year of the World“, which relate to the history of the two weeks, so as to increase people’s understanding of this period of history. On the demise of the Western Zhou Dynasty, the earliest accounts of the handed down in the literature found in ”Mandarin.“ ”Mandarin. Jin language one,“ Dr. Jin Su Shi: ”King Zhou You King cut