Of course, business is booming, and opening a good business is the blessing of the other party. People will be glad to hear you say that, because you have expressed your blessing and friendship to him. If you don't think a word of opening a business can make you feel appropriate, then you can also give someone a flower basket, which can better reflect your goodwill and good wishes.
China culture is such a word that can change the meaning of a paragraph. Opening means the first income of a day's turnover. People will say that if it's a new store,
I have to say that it really takes a long time to learn what our ancestors left behind, and the meaning inside is too profound. Learn more when you have nothing to do, and leave some cultural strength for yourself.