Fu bag (ふくぶくろ) is a kind of bag or carton that Japanese businessmen put some goods into a cloth bag or carton around the New Year (after Meiji Restoration, Japanese New Year changed to Gregorian New Year's Day) and sold them together. This kind of bag or carton is called "Fu Bag".

It is said that it originated from Japanese department stores in the late Meiji period. Shops and department stores in Japan often sell blessing bags after the Spring Festival or on auspicious days when shops are open. The price in Fu Bao is generally 1-200 yen. Although the price is reasonable, it is not reliable. Some stores often put unsold overstocked goods into Fubao to cheat customers.

So people often complain to newspapers, although occasionally lucky people can buy higher value ones. Because you have to pay before you can open the bag, consumers have no idea what's inside before you buy it. Driven by curiosity, many people donated money for many times, so the business of "Fu Bao" is always very good. Some department stores even launched hundreds of thousands of "Fu Bao" in one breath, making enough money.

Usually, the contents of the blessing bag will not be made public in advance, but the goods generally belong to the same category. For example, in the blessing bags of digital cameras sold in home appliance stores, there are often other small household appliances besides digital cameras. In terms of price, the value of goods in the blessing bag is generally higher than its price tag. For example, a blessing bag of 10000 yen may contain goods of 1. 10000 yen.

In addition, bulky goods such as cars or intangible goods such as tour groups cannot be sold in bags, but they are still called "blessing bags".

Later, the form of "blessing bag" gradually evolved into a regular promotion method during the New Year.