What is recorded in the genealogy is not necessarily completely reliable. Because future generations should be taboo to their ancestors when making biographies for them, their achievements may be magnified, and their faults are often not recorded, so we should carefully analyze them when consulting their biographies. In addition, the genealogy may be lost in the process of preservation, and future generations may add some imaginary achievements when re-recording the genealogy, thus deviating from the facts. Therefore, while reading genealogy, we should also use it carefully after analyzing local chronicles and other documents.