Giga chebi found a new city to play with and decided to experiment a bit with the different power that her big body bring... Whatever this is, it more effective to the tiny city then the weapon that all those artillery shoot at her!
One of the thing I didn't really told people about giga chebi is her ability to use her sunny power in a whole, in this case: firing a solar beam from her finger! Would be a fun party trick if it wasn't so destructive, doesn't help that she's almost miles tail too <w<