How to change the code of Prequel to the Vibrant Knight

Does the subject want to ask how to use the redemption code in Prequel to Vigorous Knight? The steps to use the redemption code in Prequel to Viper Knight are as follows:

1. First open the initial interface of the game, which is the start interface of the game. At the bottom left of the interface, find the gear icon button and click to enter the settings.

2. Then, in the setting interface, click the third option on the left to exchange the corresponding package code. In the pop-up input box, enter the obtained gift package redemption code.

3. Finally, click OK or Finish to redeem the corresponding reward.