精神解放，不仅是近代史上文章变迁的重要原因，也是两千年来历次文章变迁的一个重要条件。这可以算是一条规律。最早而又最突出的事例就是春秋战国的百家争鸣。春秋战国时期文章的发达，在两三千年的历史范围内，简直是空前绝后的。产生于这个时期的文章，两千年来始终具有独 Spiritual liberation is not only an important reason for the change of articles in modern history, but also an important condition for the passage of articles in the past two thousand years. This can be regarded as a law. The earliest and most prominent case is the hundred schools of thought in the Spring and Autumn Period. The developed articles in the Spring and Autumn Period and the Warring States Period are unprecedented and unprecedented in the history of two or three thousand years. The articles that originated in this period have always been unique for two thousand years