City: the Opening Showdown Rewards 1 Billion

One day, Zhang Hua got a system. Complete tasks to get mysterious gifts! "Ding, congratulations on completing the mission, you will be rewarded with 1 billion cash!" "Ding, congratulations on completing the mission, and you will be rewarded with an invincible aircraft carrier!" "Ding, congratulations on completing the mission, the reward is T-800!" "Ding, congratulations on completing the mission, and you will be rewarded with a private island!" From this day on, Zhang Hua reached the pinnacle of his life. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.