You can take a few photos of the graduation ceremony (preferably three or six photos) and thank you for your business trust. Choose to send them around noon 12.

First, taking photos can increase the authenticity of things, and then add words like thanking the merchants for their trust. The combination of graphics and text is more infectious.

Finally, I chose to send it at noon 12, because everyone is eating or taking a lunch break at this time, and there are many mobile phones, so it is easy to see this circle of friends and play a propaganda role.

Note that if the owner needs to hide private information, he must do so.