What does it mean to write a word on a red envelope?

Writing a sign on a red envelope means congratulations.

Tools, housing, from the perspective of hands and simple instruments, show that it is related to doing things and doing things. Original meaning: ancient wooden containers used for burial.

It is extended to "preparation and handling", such as: having words (explaining beforehand), having something to do (preparing and handling), having a prison (preparing and handling crimes), having actions (preparing and handling practical matters and implementing them) and taking measures (preparing).

Also extended to "complete, complete", such as: adequate (complete, complete), well decorated (ready to decorate), well tied (ready to sign related matters).

Then extended to "set, set", such as: dishes (banquet dishes).

It also means "display", such as: exhibition (display, display).

Also extended to "wine and food", such as: special (wine and food), special (meal preparation).

It is also extended to "governance and rectification", such as: self (governance itself).

It is also extended to "prepare and incur", such as: doing something (preparing for the wedding) and being thin (preparing for the gift).

Also extended to "invitation", such as: giving a speech (preparing food and wine to entertain guests).

That is to say, "set", for example, there is a boat (prepare the boat and assemble it).

Prepare, prepare, prepare, prepare, prepare, prepare, prepare, prepare, prepare, prepare.

It is also a "quantifier". One (one, one)

It's also a surname.

Write symbols on red envelopes to express congratulations, usually used for weddings.