In some Chinese areas, when people have their sixty years old birthday party, their friends and relatives come and celebrate his or her birthday. End of this party, the host gave longevity bowls to their guests. On the bowl there are figures and words, which means good luck, healthy and longevity.
From then on, every ten years the old people have a big party to celebrate their birthday of 70, 80, and so on. On the party they gave guests longevity bowls each time.
So in China, longevity bowl means good luck, healthy and longevity.