The memo is the bank's foreign exchange settlement voucher, which has the foreign exchange settlement amount, the quotation price and the verification document number. The word "water" is a common name in Chinese areas. It was originally called "water" for the fineness of silver. When silver is insufficient, it should be supplemented, which is called "paste water". Then the document filled in is the memo. At present, this term has been commonly used in the endless stream of original documents.

There are several kinds of memo, such as payment memo (a written document that you pay someone and the bank deducts money from your account), settlement memo (a written document that your company notifies your company when you receive the payment from the customer and the bank enters it into the account), and bill of lading memo (a written document that the bank informs you that the money charged by your company has arrived). The memo can also be a screenshot of regular online banking transfer, which belongs to a transfer voucher.

Precautions for staying in a hotel:

1. Bedding hidden crisis: Many people are infected with many infectious diseases while staying in a hotel. Therefore, it's best not to sleep naked when sleeping. You must wear pajamas and don't expose a large area of skin to direct contact with bedding, you know.

2. Hot water kettle: The hot water kettle in the hotel has a lot of functions, such as filling ash, wine and vomit after drinking, which is really disgusting. Therefore, it is necessary to carefully check whether the interior is clean and rusted before use. When it is confirmed that there is no problem, first boil the water, don't drink it in a hurry, first boil it for disinfection, then pour it out, and then heat a pot to be safer and healthier.

3. water cup: don't use it safely when it says that it has been disinfected, because some room attendants don't even bother to use washing products to clean the cup, and they just wash it with tap water casually, and there are few high-temperature disinfection procedures.

4. Toilet: Because the toilet is in direct contact with the skin, many people use it, and it is easy to contact infectious diseases. Please be sure to put a piece of paper before using it, or choose a squatting toilet.