A poster featuring members of GNZ48 for a New Year's Eve variety show of the Greater Bay Area (encompassing the major neighboring cities like Guangzhou, Shenzhen, Hong Kong, Macau, etc. in a southern coastal province & being one of the three main economic powerhouse regions of the country) on the provincial satellite TV station tonight:
微博
^ Note that they aren't gonna send their top members to perform on that show; they're all donning their current dress uniforms; those three members dressed in light blue at the back are their trainee members - yes, even the trainee members have their own dress uniform;
those buildings at the bottom are an assortment of landmarks in various GBA cities.
[EDIT]
[Re: The latter part of the preceding post] One of the stage numbers: