"See Si Qi" means that a good example will shock you and drive you to catch up; "Self-examination when you see a bad example" means that a bad example "teaches you". You should learn from it and continue to fall with others. Mencius' mother moved three times in a row for fear that Mencius would be influenced by bad neighbors. In his poems, Du Fu boasted that "Li Yong is eager to learn and is willing to be a neighbor", which all showed the role of this "model". When you see a saint who is equal to him, when you see a person with bad moral character, you should reflect on whether there is the same mistake!