Save some money. Is the koi fish card true or not?

Now there are many discount cards for life services, many of which can be applied for free. Among them, knight card is a very popular one. Now I have a money-saving koi fish card, which can enjoy various discounts such as hotels and gas stations. Many people don't believe it. Is it true or false that this koi fish card saves money? The money-saving koi fish card really exists. Now many netizens have applied for it, and the preferential strength is similar to that of the well-known knight card. Handling is also very simple, just log in to koi fish Card official website, fill in the relevant information application, and then mail it to your designated address. If you have a koi fish card and a Knight card at the same time, you can also enjoy two discounts. So koi fish cards really exist, similar to some discount cards that we are familiar with. If you are interested in this kind of discount card, you can apply for one.