20世纪社会主义在坎坷和曲折中不断前进,开辟了人类社会最伟大的变革历程,对人类进步和世界文明作出不可估量的重大贡献并形成了一系列基本特征。21世纪,世界发生了重大变化,世界社会主义有新的趋势和走向,我们是历史乐观主义者,对社会主义必然取代资本主义和最终实现共产主义充满信心。 In the course of ups and downs and twists and turns in the 20th century, socialism has opened up the greatest course of change in human society and made immeasurable great contributions to human progress and world civilization and formed a series of basic features. In the 21st century, major changes have taken place in the world and new trends and trends in world socialism. We are historical optimists and full of confidence that socialism will inevitably replace capitalism and ultimately bring about communism.