How long will the hot-dip galvanized nails rust when placed in the open air?

Zinc is easily oxidized in hot and humid environment, and it is afraid of acid rain. After zinc is oxidized, it will form dense basic zinc carbonate-commonly known as white rust (very stable; On the surface of iron, even if white rust breaks, electrochemical corrosion will occur, so even in Guangdong, a typical subtropical monsoon climate, it can resist decoration for more than 50 years by passing the national standard hot dip galvanized nail!