Group 1 - The "Tai Bao Yong Yan - Fangshan Liulihe Site Special Exhibition" is the first exhibition in the "Beijing Historical and Cultural Exhibition" series, showcasing the most comprehensive archaeological findings from the Liulihe site over the past 80 years, with a total of 180 precious cultural relics on display, including 39 important artifacts [1] - The exhibition features significant artifacts such as the "Zuo Ce Huan Qi" bronze ding, which reveals the theme of the exhibition and provides evidence of Beijing's over 3,000-year history of urban construction [1] - Notable treasures from the Capital Museum are also on display, including the largest and heaviest Western Zhou bronze vessel, the Jin Ding, weighing 41.5 kilograms, which contains inscriptions detailing historical events related to the offerings made to the Tai Bao [1] Group 2 - The exhibition includes the Bo Ju Ge, showcasing the pinnacle of Western Zhou bronze casting techniques with its intricate design featuring seven bull heads, highlighting the artistic and manufacturing excellence of the region [2] - National treasures such as the Ke Lei and Ke He are displayed in pairs, with inscriptions that document historical facts related to the origins of the city, providing critical archaeological evidence [2]