"What a day" is a light variety reality show launched by Bilibili in the summer of 2020, produced by Atomic Entertainment.

The regular members of the show are Hua Shaobei, LexBurner, LaoFanQie, Some Fantasy King, and the Chinese BOY Super Gorilla.

Starting from July 24, it will be broadcast exclusively on Bilibili every Friday at 12:00 noon. Created by the UP host Hua Shaobei, LexBurner, LaoFanQie, Some Magic King, Chinese BOY Super Gorilla and Pharaoh! Summer limited theme song "Summer Boy".