In the Fairy World, I can be Rewarded by God

The dragon clan rules the world, and the human race is like ants and pigs.
This is the world of Fairy Tail, the world of Fairy Tail four hundred years ago.
However, this has nothing to do with Lin Yun.
Lin Yun, who has just crossed over, needs to solve the problem of food and housing the most. Moreover, it is not only the dragon clan that is dangerous in this world, but the dragon clan is even more dangerous.
Fortunately, Lin Yun brought with him the Heavenly Dao Rewarding System, so every effort will be reaped.