When New China was just founded, the country was basically a ruin, everywhere needed to be rebuilt, so the whole country is building a lot of civil engineering, in this process many historical sites were discovered, historical research provided a lot of precious materials, and later because of some special problems, the mainland's archaeological research stagnated for more than ten years, until after the reform and opening up, the country's infrastructure construction flourished. In the process of continuous construction, our infrastructure workers have successively built many thousand-year-old tombs.
