总结历史经验，揭示历史规律。始终是党史研究的一项重要内容，也是党对新时期党史工作的一项基本要求。因此，科学总结历史经验，大胆探索党在各个历史时期，领导各 Summarizing historical experience and revealing the law of history. It is always an important part of the study of the history of the party and a basic requirement of the party to the work of the history of the party in the new period. Therefore, we should scientifically sum up historical experiences and boldly explore the party’s leadership in all historical periods