What is the detailed meaning of "Best wishes to Shang Qi" usually used at the end of a letter?

Qi has auspicious meaning. Wishing merchant (also refers to businessman, businessman, etc. ) (but generally congratulations are not given). Similarly, there is such a thing as "commemorating Shi Qi".

"Best wishes to Shang Qi" means wishing you a prosperous business at the end of the letter.

For literati, writers can use "Wen Qi"; It is auspicious to use "teaching qi" for teachers and "time qi" for ordinary people at present. When writing a letter, you can also change the first two words, such as "ode".