Congratulations on this transaction.

When giving a red envelope, you can express the following meaning:

1. Congratulations: You can say "Congratulations on your successful transaction!" Or "Congratulations on this deal!" Congratulations to each other.

2. Thank you: You can say, "Thank you for your hard work, which made this transaction successful!" Or "Thank you for your efforts to bring this business to the company!" Express gratitude to each other.

3. Encouragement: You can say, "Keep working hard and get better results next time!" Or "Keep working hard and you will definitely make more money!" In order to encourage each other to continue their efforts and achieve better results.

In short, when giving out red envelopes, you can express your affirmation and support to each other with words of praise, thanks and encouragement, and enhance your work motivation and confidence.