How to change the equipment type under the elf cooperation mode of tower defense

The tower defense elf cooperation mode changes the equipment type according to the following steps:

1. After entering the game, there is a gold coin icon in the upper right corner of the screen.

2. Log in to your account and click the backpack button in the lower right corner. Click on the gold coin and the equipment type will appear.

3. Select the equipment you need, click Buy and Install, and click the equipment you want to replace in your backpack to replace it.