Alex had previously gotten many coins from the tower of origin. The only problem was that he only got peak stage rank 2 cores. In simple terms, there were nothing else other than the peak stage rank 2 cores. Each peak stage rank 2 core could earn him a total of 300 system coins.
As of present, he had 8300 peak stage rank 2 cores. These were what he had earned from the tower, or what remained after the previous exchanges for cultivation and coins. Since the second day, he had fought at least 84 groups of goblins and each group had a total of a hundred. It seemed that the tower had decided that Alex had to fight against the goblins as during that period, there was no any other type of monster that was brought to him.
'System, exchange five thousand cores for coins.' He decided to do a big
