"Geology Talk" has been on air for many seasons, enjoying lasting popularity. This success is in part due to local government support, but also because the show is very well produced.
With Song Chi's reminder, Zhou Yun was ready for the surprise "ambush" from the production team the next morning.
She wasn't afraid of being seen without makeup, but the lighting had to be good, to avoid looking worn out on camera. The internet is rife with so-called "shocking make-up-free photos of celebrities"; often, those pictures are unflattering not because the celebrities are actually ugly without makeup, but due to poor lighting and other factors that could make anyone look like a dinosaur or a monster.
Zhou Yun tried several setups, turning on only the bedside lamp, the ceiling light, or the hotel room's lighting, among others. She tested each to see how she looked in her phone's native camera. Finally, she chose the lighting that made her look best and fell asleep with the lights on.