Dragon King: I Have 90 Billion Gold

Wang Xuan, he was the son of a poor family. His father and mother abandoned Wang Xuan, knowing they could not care for Wang Xuan. From then on, Wang Xuan began to be cared for by his paternal grandmother and grandfather. But unfortunately, for a moment when Wang Xuan graduated from Jinxia University. He was forced to accept the situation where he was thrown away by the boss of the place he worked, the most unimaginable thing he could do. But thanks to that, Wang Xuan now no longer had to experience problems with his economy. As of now, Wang Xuan has now been granted the power of the system. [Congratulations to the host! You have been successfully selected as the heir of the Dragon King!] [Host's first mission is to collect as much money as possible, trying to strengthen your strength!] [The higher the money that can be earned, it is possible that the host's abilities will be improved.] [Good Luck~. I, the Dragon King System provide full support to the host.] Damn... Is this a dream? ... Are you interested? Please watch the main character's journey of feeding his family!