In the underground city, there was a major place, which was reserved for future use. That was the inspection center. When the game limits the cash transfer and is transferred, this place would also be a source of wealth. Of course, the others could also build similar reception centers. However, when the time comes, it would depend on the number of flowing gold coins. Haha.
What's more, I set the transmission array. I set the sharing between the Fairy City and the underground city. That is to say, through the transmission array of these two cities, you can go to the surrounding area of the nightmare swamp. However, these transmission arrays are not opened from other cities. In this way, the income of the transmission array has become a main income of the Fairy City and the underground city
