For example, after Liu Pang died, his son became the emperor. Afterwards there were still two emperors. But it is as if these two emperors just don't exist. Even in the Comprehensive Mirror.
譬如說，劉邦死後傳其子，之後還有二位皇帝，但這兩位皇帝不存在，包括《資治通鑑》都沒記載。