Abstract:“Shu” is an important concept in Lun Yu and also a golden moral rule attracting much attention among domestic and foreign scholars. There is an implicit relational structure among“Shu”, “Cheng”and “Ren”in Si Shu (The Four Books). “Shu”and“Cheng”both have the connotation of being considerate, but the difference is that “Shu”focuses on treating others as they expect to be treated while“Cheng”emphasizes self-improvement. But“Shu”and “Cheng” both point to “Ren”, and are unified in ‘Ren”. Confucius’ Dao can't be achieved without integrating“Shu”,“Cheng”and“Ren”.