You blinked

Han of Hong Kong is traveling with his parents, Li and Law.

...

Han: Mom, you blinked. We’ll take it again.

Ms Li: Always I flinch when the flash goes off.

Mr Law: You blink before the flash goes off.

Han: Anyway, focus on your eyes. Keep them wide open, like a gwailo.

Ms Li: No way, I'm Chinese.

Han: I’m serious. The big-name movie actors have this charisma because they blink less often than ordinary people. They train themselves not to blink. Chinese or not, makes no difference.

__________

Voiceover

Han is right about the big name movie stars having better control over their eyelids than normal people. Watch them on-screen. Unblinking. Hypnotic. Focus. That gives them control. The expression was quoted most famously by Secretary of State Dean Rusk after the Soviets turned back from Cuba in 1962. "We went eyeball to eyeball, and I think the other fellow just blinked."

...