In recent years, the word "free" frequently appears in front of the public, whether on the Internet or in real life. All walks of life choose words under the banner of free, ranging from food, clothing, housing and transportation to automobile construction. To sum up in one sentence, the final cost of getting something is 0 yuan, that is, taking it for free, using it for free and eating it for free.

In order to increase sales and popularity, merchants will attract users through some marketing means, such as lottery, sharing and friend invitation. Some platforms will also launch order-free activities at specific times. However, in free activities, some businesses or platforms have false propaganda, and consumers need to pay attention to screening. Free of charge activities generally have certain conditions, for example, you need to complete the purchase, sharing and other operations within a certain period of time to get a free of charge opportunity.