李大钊是中国共产党的主要创始人之一,一直在北方从事革命活动。然而,他在建党前后曾七次来到上海,或协助云南护国军筹募军饷,或投入反袁斗争,或开展统一战线工作,或促进国共合作,留下了闪光的足迹。 Li Dazhao is one of the main founders of the Chinese Communist Party and has been engaged in revolutionary activities in the north. However, he came to Shanghai seven times before or after the founding of the party, or helped the Yunnan Defense Forces to raise their salaries, fight the anti-Yuan struggle, carry out the united front work, or promote the cooperation between the Kuomintang and the Communist Party, leaving a glittering footprint.