It is true that postal credit card coupons can be used to buy Moutai. Postal credit card coupons are a type of coupon issued by China Post Bank. The holder can use them at designated merchants or designated products, including some high-end alcoholic products. As one of China's famous liquor brands, Moutai is usually one of the products eligible for coupons.

The reason for all this is the cooperative relationship between merchants and China Post Bank. Merchants hope to attract more cardholders to spend money by cooperating with China Post Bank. At the same time, China Post Bank also hopes to attract more users to use its credit cards and provide more discounts and benefits. Therefore, merchants have reached an agreement with China Post Bank to allow users with postal credit cards to use coupons to purchase products such as Tai Moutai.

It is worth noting that there may be restrictions on specific usage rules, such as the usage time and usage amount of the voucher. In addition, the issuance of coupons may also have certain restrictions. For example, a certain consumption amount needs to be met in order to obtain the coupons. Therefore, when using coupons to purchase Tai Moutai or other products, it is recommended that you understand the relevant regulations and restrictions in detail to avoid misunderstandings or inconveniences.

In short, postal credit card coupons can be used to purchase Tai Moutai, which is the result of the cooperation between merchants and China Post Bank. However, the specific usage rules and restrictions may vary. It is recommended that you understand the relevant information before purchasing and use the coupons in accordance with the regulations to fully enjoy the discount.