Three-fold umbrella refers to an umbrella whose skeleton (keel) can be folded three times, while five-fold umbrella refers to an umbrella whose skeleton (keel) can be folded five times. Umbrella is a tool to provide a cool environment or shelter from rain, snow, China is the world's first invention of umbrellas, umbrellas is an important creation of the Chinese working people, it was known as the "umbrella", umbrellas and people's lives are closely related to the influence of the Chinese culture, many countries in Asia have long been the tradition of the use of umbrellas, and Europe to the 16th century before the popularity of Chinese umbrellas. The 16th century only began to popularize the Chinese umbrella.

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