To experience the upgrade, you only need to bring your machine friend to PVE mode and let him kill the enemy (machine friend can only be used in PVE mode). The experience has been upgraded quickly. Playing a simple PVE for more than a dozen games can make the machine friend rise to about level 20. Generally speaking, it is not recommended to directly bring the machine friend into the difficult PVE (such as difficulties and nightmares), because the machine friend will also die. You can kill a machine friend with low experience and low potential with a random attack monster in difficulty and nightmare difficulty, unless you bring high-level machine friends, such as rare machine friends (purple) and epic machine friends (gold), but in nightmare difficulty, even epic machine friends will be killed as long as they have low experience and low potential.
And the potential upgrade, this can only rely on RMB pile or energy saving bar (commonly known as dog food) pile level, and the potential upgrade is very difficult. According to the calculation of my friends, I want to raise the potential of my friends to 30 full grades, without 2000 yuan? no way
Then there is dog food, dog food. You can get a small amount of dog food in daily tasks, or you can exchange it with the recharge points of recharge feedback activities (remember 160 points exchange 100 dog food).