Find the name of a Chinese science fiction novel about the Ice Age

It was a very pure science fiction novel. The name seemed to have four words, with the word "ice" in it. It's not a fantasy book. I read it in 1997 when I was in the second year of junior high school. At that time, there were no fantasy novels or online novels.
It was a science fiction novel I read in junior high school ten years ago (1997). It was a long novel written by a Chinese author. He had seen it before, and it was a memorable experience. Now that he had been working for three years, he had always wanted to look for it again, but he could not remember its name. I hope that friends who have read it can help me provide some clues. As for the author of the book, I would be very grateful.
The book began with a primitive tribe from the Ice Age. The protagonist was a tribal boy who fell in love with a girl in the village. The tribe had lived there for generations. The environment outside was very harsh and cold. Then, for some reason, the protagonist and the girl began to go on an adventure. It was very long and they had many adventures. During the experience, he gradually understood that they were actually the descendants of the survivors of an advanced and powerful civilization that had been destroyed by war. The protagonist discovered the ruins of the civilization left by his ancestors and some equipment prepared for future generations (like a huge robot). Through these, he obtained the memories of the previous civilization and understood everything. Unfortunately, the robot began to follow the set instructions to eliminate the invaders--- He had to think of a way to stop it. The story ended here, leaving some suspense. He didn't know if there was a second book.
He still remembered some messy stories, such as how the people of the tribe began to record things with ropes, how the girl used animal skin to make clothes, and how the young man and the girl found a hundred fish at the bottom of a pool in a cave. The fish tasted very good, and so on.

Answer 1

The Ice Age was a relatively broad concept that could be referred to in the following Chinese science fiction novels:

1 " Three-Body " series: Liu Cixin's science fiction novel described the history and development of civilization on Earth during the Ice Age.

2 Wandering Earth: Liu Cixin's science fiction novel described the extreme measures taken by humans to save the earth during the Ice Age.

" Past Earth " series: Liu Cixin's science fiction novel described Earth's exploration of the universe during the Ice Age and after.

4 " Snow Country ": Kawabata Yasunari's novel described a Japanese society during the Ice Age.

5 White Night Walk: Keigo Higashino's novel described a Tokyo society during the Ice Age.

The above are some names of Chinese science fiction novels that might meet the requirements. I hope you can help.