The Time-Travel Experiment Ended up in the Troubled Times of the Late Qin Dynasty?

[Group portrait + multiple time travels + fictional history + no system + slow heat + no heroine] "Why did I come to the Lu family at the end of Qin Dynasty?" "Lu Pheasant is my sister and Liu Bang is my brother-in-law?" Lu Chen has been here for ten years because of an experimental accident. He has always adhered to the principle of experiment and did not interfere with history, but hasn't his anomaly changed history? The other time-travelers we finally found were corrected by history? Family members were injured trying to save themselves? It seems that this history has to be changed!