Ding!
"Game Announcement: Congratulations on reaching 1 million people per day in your main city. Reward received: Wood+500,000, Stone+500,000, Steel+50,000, Crystal+10,000…"
"Game Announcement: Congratulations on reaching 2 million people per day in your main city. Reward received: Wood+1 million, Stone+1 million, Steel+100,000, Crystal+20,000…"
"Game Announcement: Congratulations on reaching 3 million people per day in your main city. Reward received: Wood+1.5 million, Stone+1.5 million, Steel+150,000, Crystal+30,000…"
"Game Announcement: Congratulations on reaching 4 million people per day in your main city. Achievement reward: Wood+2 million, Stone+2 million, Steel+200,000, Crystal+40,000…"
"..."
As time passed, the population in the city increased crazily.