What is the stalk about climbing a mountain?

We often hear that we are going to climb the mountain together, but many friends don't know what this stalk is. Now let's talk about it in detail:

Stems come from the TV series Hidden Corner. Zhang Dongsheng, played by Qin Hao, can't stand the ridicule of her parents-in-law, and finally pushes her parents off 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.

"Hidden Corner" Zhang Dongsheng, a math teacher in Children's Palace for 8 years, gave up all the cities that came to find his wife for love. Through cooking, all the details reveal that he loves his wife very much, but now he still achieves nothing. His parents-in-law also felt that he was not worthy of his daughter and supported their divorce, which made Zhang Dongsheng accumulate anger and unwillingness for many years.

At a party, Zhang Dongsheng suggested taking two old people to climb the mountain alone. When taking pictures, Zhang Dongsheng asked his father-in-law, "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.

Now "climbing together" has become a kind of death invitation stalk, which means climbing to push you down.