1. Yiw represents the Yiwu Airport.2. Yiwu Airport is located in Yiwu City, Zhejiang Province, China, and is an essential regional airport.3. The airport code "yiw" is derived from the Chinese拼音 "yiwu," assigned by the International Air Transport Association (IATA) for global airport identification in booking, ticketing, and air transport management.4. This three-letter airport code system simplifies and standardizes the process of identifying airports worldwide.5. As a medium-sized airport, Yiwu Airport connects Yiwu with multiple domestic and international cities, playing a significant role in promoting local economy and tourism.6. The airport offers not only passenger services but also cargo transportation, supporting the development of Yiwu as a small commodity distribution hub.7. The code "yiw" has become an important identifier for Yiwu Airport in terms of local transportation and economic development.8. For instance, when someone needs to fly from Beijing to Yiwu, they might search for and book a flight using the codes "PEK-yiw" in the booking system.9. Here, "PEK" represents Beijing Capital International Airport's IATA code, while "yiw" stands for Yiwu Airport.10. This code system facilitates passengers and airlines in accurate identification and selection of flights, ensuring efficient and safe air transportation.