Which traditional marketplace features a centuries-old voice commerce tradition where auctioneers use a unique silent hand gesture system hidden under cloths to negotiate prices?

Throughout history, different cultures have developed unique retail traditions that persist despite modern commerce trends. These traditional marketplaces and selling practices often become cultural touchstones and tourist attractions while preserving ancient trading customs. Test your knowledge about how various cultures have maintained their traditional retail practices in the modern world!

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Tsukiji Fish Market in Tokyo, Japan
Grand Bazaar in Istanbul, Turkey
Tehran Carpet Bazaar in Iran
Chatuchak Weekend Market in Bangkok, Thailand