After receiving the grant from the National Defense of the United States' executive officers, Tesla could finally execute his idea.
His first step was, of course, to purchase more soul coins. With the financial support of that huge grant, Tesla bought all the soul coins with relatively reasonable prices in the Soul Coins Transaction Center of the American server in one go.
Despite that, the soul coins were still insufficient for him to carry out his plan as the building and execution of a battle fortress required an extreme amount of soul coins. Besides, many players in Naraka were unwilling to sell their soul coins since they didn't even have enough soul coins for their own use. Meanwhile, he was not the only person purchasing the soul coins. There were other cash rich players like him who were splurging money on soul coins. This resulted in a continuous increase in market price. Some of them were even the players from the National Defense.