The next few days, Song Yan spent in training.

At the same time, the system brought him good news. The third system was integrated and his own system was successfully promoted to two stars.

At the same time, there is another interesting commodity in the system mall.

This product is called an upgrade card. The only function of this upgrade card is to stimulate the wearer to upgrade and explode all kinds of items when the host kills the living beings.

However, the activation time of an upgrade card is only two hours.

The exchange price of the upgrade card is 1 million points.

It's quiet in the middle of...