The specific steps of deleting all chat records of Fetion at one time are as follows:

Log in to Fetion client;

Click "Main Menu-Tools-History Manager";

Open the history management interface;

Select a friend and right-click the friend's avatar;

Select Delete History and click OK to delete all chats with this friend.

Step 1 is as follows:

The figure shows step 2.

Step 3 is as shown in the figure:

Step 4 is as shown in the figure:

The figure shows step 5.