What are the unreasonable plots in the background of the film?

I feel that there are many unreasonable plots in the movie. For example, in the movie The Wandering Earth, the first thing is that the earth is captured by Jupiter's gravity. At that time, the technology of the earth could already develop planetary engines, and even artificial intelligence appeared. But didn't you figure out the orbit of the earth flight in 17? Although it is said in the plot that the orbit deviation is due to the failure of the earth's engine, many people in the world did not expect to install more flints near the engine and had to wait until the engine turned off. There is also a limited population of underground cities, which can only be entered by lottery. The protagonist and grandpa were lucky enough to enter it because of Jason Wu, but how did the little girl adopted by grandpa get into the dungeon later? In my opinion, these are all unreasonable plots.