How can I send messages quickly?

How can I send messages quickly? Take WeChat as an example.

Open WeChat, enter the chat page of WeChat, and then click the last "I" in the taskbar at the bottom.

After entering "Me", you can see our personal information, and then click the last item "Settings" at the bottom.

Then re-enter a page where we can see "General" and click "General".

We can see a "function" in "general". After clicking, we can see a group of assistants inside.

Generally speaking, the group assistant is not enabled at first. Mine has been used, so I opened it. If it is not open, it can be opened in a function that is not enabled.

After entering, we can click "Start Group Sending" to create a new group sending, select all the friends we want to send, and then click Next to edit the text or pictures in the chat box.