What is the stem of mountaineering photography?

Because of the online drama "Hidden Corner", Zhang Dongsheng, played by Qin Hao, can't stand the ridicule of her parents-in-law because she is a rebellious son-in-law. Finally, she pushed her parents down from the top of the mountain on the grounds of taking pictures while climbing the mountain. After that, "climbing together" became an invitation to death, which means climbing to push you down.

At a party, Zhang Dongsheng suggested taking two old people to climb the mountain alone. When climbing the mountain, Zhang Dongsheng asked his father-in-law when taking pictures: "Do I still have a chance?" Actually, I asked him if he still had a chance to learn photography. As a result, his parents-in-law said that he had no chance and his daughter was unhappy. These words angered Zhang Dongsheng even more, so Zhang Dongsheng took them to the top of the mountain. When he took the opportunity to take pictures and pose for his parents, he pushed them down the mountain.