So Much for the Power of Nines!
International Business Etiquette - Advice for Jobs Overseas from Monster.com: "Gifts are particularly important in Japan -- but you should never give a Japanese company or individual a set of four or nine of anything, as these numbers are unlucky in Japanese culture. Around the world the wrapping can be just as important as the gift itself. In China, you should avoid wrapping gifts in white or green paper, as they are considered unlucky colors."