Since the Chinese calendar is a lunisolar calendar, the last day of a year is also called lunar New Year's Eve (Traditional Chinese: å¤§å¹´å¤, Pinyin: dÃ niÃ¡nyÃ¨, translated: old, large, huge, major, important year's night).
Aluminum corrodes but it does not rust. Rust refers only to iron and steel corrosion. Aluminum is actually very prone to corrosion. However, aluminum corrosion is aluminum oxide, a very hard material that actually protects the aluminum from further corrosion. Aluminum oxide corrosion also looks a lot more like aluminum (dull gray to powdery white in color), so it isn't as easy to notice as rusted iron.
Iron and steel rust when they come into contact with water and oxygen. They rust faster in salty water or acid rain. Aluminium, on the other hand, does not corrode easily, because its surface is protected by a layer of aluminium oxide. Iron is the metal most commonly associated with rust. Oxidated iron is called hydrated iron oxide, and it has the burnt orange color most commonly associated with rust.