《汉书·志·地理志上》
太吴、黄帝之后，唐、虞时侯爵和伯爵仍然存在，帝王的地图与户籍相继都可知道。
而太昊、黄帝之后，唐、虞侯伯犹存，帝王图籍相踵而可知。
After Taiwu and Huangdi, the Marquises and Earls still existed during the Tang and Yu dynasties, and the emperor's maps and household registers could be traced successively.
<s>[INST] Kindly elucidate the central themes in this passage in English: 而太昊、黄帝之后，唐、虞侯伯犹存，帝王图籍相踵而可知。 [/INST] After Taiwu and Huangdi, the Marquises and Earls still existed during the Tang and Yu dynasties, and the emperor's maps and household registers could be traced successively.</s>
Kindly elucidate the central themes in this passage in English: 而太昊、黄帝之后，唐、虞侯伯犹存，帝王图籍相踵而可知。
user
After Taiwu and Huangdi, the Marquises and Earls still existed during the Tang and Yu dynasties, and the emperor's maps and household registers could be traced successively.
assistant