Private messaging is a way to communicate one-on-one with other users on a social platform or website. Regarding how to send private messages on Xiaoyu.com, the specific steps may vary due to platform updates or personal usage habits. Generally speaking, the following is a common way to operate private messages:

1. Open Xiaoyu.com and log in to your account.

2. Find the entrance to the private message or message at the top of the page or in the sidebar, which is usually displayed as an envelope icon or text.

3. Click the private message entrance to enter the private message page.

4. On the private message page, you can enter the other party's username, ID or mobile phone number, or select the person to whom you want to send a private message through the contact list.

5. Enter the content to be sent, which can be text, pictures, links, etc.

6. Click the Send button to send the private message to the other party.

Through the private messaging function, users can communicate with other users more privately, share information, discuss topics, or solve problems. The private message function usually also provides message recording, blocking, deletion and other operations so that users can manage and protect their private message content.

It is worth noting that the specific private message operation method may vary due to updates or version changes of Xiaoyu.com. It is recommended to conduct private message operations according to the operation guide provided by the current Xiaoyu.com platform. In addition, maintaining good online etiquette and respecting the privacy of others are basic principles for communicating in private messages.