Editing sent messages on This App is not a straightforward process, but there are workarounds to make it possible to edit or delete messages in private chats. Here's a step-by-step guide on how to edit sent messages on The Platform:

Unfortunately, telegram 中文 版 does not allow users to alter their messages directly from the application, but there is a workaround that makes it possible to edit messages by removing them first and re-sending them as new messages.

To alter sent messages on The Platform, you'll need to delete the message first, and then re-send the edited message. Here are the instructions to do so:

1. Find the chat that contains the message you want to alter, and go to that conversation.
   
2. Click on the message you want to alter. This will bring up an options with several choices.
   
3. On this menu, select the "Remove" option. A confirmation will appear to ask if you are sure you want to delete the message.
   
4. Tap on "Delete" to confirm, and the message will be deleted from the conversation.
   
5. Now that the message is deleted, you can edit the message with the changes you want to make. If the message you removed was part of a larger conversation, it's a good idea to compose a new message and send it before editing the original message.
   
6. Once you have composed the edited message, compose it in the message window at the bottom of the conversation pane.
   
7. Send the altered message by pressing on the "Post" icon or by clicking the paper plane icon at the bottom right corner of the conversation window.
   
8. The altered message will now be displayed in the chat, and it will appear as a new message.
   
   

Note: Deleting a message and re-sending it as a new message does not send a message to the other users in the group or private chat, but they may realize that the message has been re-sent, so it's best to avoid re-sending messages that are completely different from the original one.

Another thing to be aware of is that if you re-send a message that was sent previously, The App will automatically change the time stamp of the re-sent message to be the time stamp of when it was re-sent, not the original time stamp. This means that the re-sent message will appear in the chat as being sent recently, not when it was actually sent previously.

Keep in mind that while this method allows you to alter or remove messages on The Platform, it's not a built-in feature for doing so, but it's a solution to achieve similar results. If you're in a group chat where multiple people are sending messages rapidly, removing and re-sending messages may not be ideal for avoiding distractions, especially if the other group members recognize the deleted message or re-send.