Can 4399 Rainbow City still play?

I can't. According to official website's query of 4399 game, Rainbow City of this game has been taken off the shelf and can't be played. 4399 Games is the leading online leisure game platform in China. Since its establishment, 4399 has adhered to the "user experience" as the core of the website building model, providing users with all kinds of green, safe and healthy games free of charge, and constantly improving its service strategy.