How do you increase your pet grade on jade dynasty?

To increase your pet grade in Jade Dynasty, you can use the "Pet Training" feature, which allows you to train your pet by feeding it specific items to boost its attributes. Additionally, you can improve your pet's grade by leveling it up and using "Pet Evolution" materials when your pet reaches the required level. Engaging in battles and completing quests can also provide experience points, helping to enhance your pet's overall capabilities. Regularly check for events and resources that might offer special items for pet upgrades.