Why does someone put a box around the information sent in QQ chat?

Log on to exp.qq.com, the designated website of Tencent, and experience QQ version QQ5.0.

Step two:

Install the new version of QQ software and log in to your QQ account.

Step 3:

Click the "Change Appearance" icon at the top of qq.

Step 4:

Select "Color Bubble" under the "Change Appearance" setting.

Step five:

When you enter the "color bubble", you can see that there are several replaceable message bubbles, but only three are permanently free, and some are limited free. The rest is that you need vip to use it.

Step 6:

After choosing your favorite colored bubbles, you can see the lovely bubbles when you open the chat.