How to use the Greentree Inn voucher?

When booking a hotel, there will be signs of 20, 30 and 50 at the back of some rooms in the room type and quotation list, which means that some room rates can be offset by vouchers. For example, the symbol "20" means that vouchers from 20 yuan can be used to offset the room rate in 20 yuan. The specific use method is: when booking according to the prompt, the system will automatically ask whether to use the voucher, and choose to use it.

Vouchers are a kind of preferential activities of merchants, and vouchers can deduct the same amount of cash when shopping. Vouchers, as the name suggests, replace paper money.