● This film is the first mountaineering adventure film since 1995 when China introduced blockbusters.

● The foot without toes in the credits is the foot of mountaineer Mark. 1994, when he was climbing Mount Everest and camping outdoors at night, his toes were cut off due to frostbite.

● Some special effects in the film were done by the actors themselves.

● This film is the first time that director martin campbell has returned to his hometown of New Zealand to shoot.

● The mountaineer Ed tours plays himself in the film.

(The above references)

Be exposed to lies

The signal range of the radio is exaggerated in the film. It is impossible for a small UHF antenna to have a long receiving distance. It is several kilometers from the cave to the camp in the film, and it is almost impossible to talk.

● In the film, when Peter and Anne talked on the radio, they never let go of the call button.

Speaking of water shortage, there are obvious water droplets in the background.

Nitroglycerin will not boil in the sun.

(The above references)