① wiping the glass with a towel dipped in beer or warm vinegar can quickly remove the dirt on the glass. (2) the glass is painted with chalk grey water or gypsum powder first, and then wiped with a cloth after drying, so that the glass can be wiped clean. (3) put some water in the washbasin, pour a little shampoo and mix it, and then use it to clean the glass, which will be particularly clean and bright. You can use an old newspaper to wipe the glass door. First, wipe the glass door with a wet rag, and then wipe the water stains on it with an old newspaper.