What thus it mean by clean shoes?

"Clean shoes" typically refer to footwear that is free from dirt, stains, and scuff marks, presenting a polished and well-maintained appearance. This can signify personal hygiene, attention to detail, and respect for oneself and others. In various contexts, clean shoes may also convey professionalism and an effort to make a good impression. Additionally, it can reflect one's lifestyle choices and care for their belongings.