About the author: Mao Zedong (18931February 26, 976-1September 9, 976), whose real name is Runzhi (originally Yongzhi, later changed to Runzhi), is pen name Zi Ren. Hunan Xiangtan people. China people's leader, Marxist, great proletarian revolutionist, strategist and theorist, main founder and * * * of China, China People's Liberation Army and People's Republic of China (PRC), poet and calligrapher.
Meaning: learn from others' strengths with an open mind, and you can gain something and make progress; If you are conceited and self-righteous, you will not learn from others' advanced knowledge and enrich your own experience, and you will be left behind by others.