The protagonist is neither a reborn person nor a time traveler. The ability he possesses is "awareness connection across time and space." His body remains in 1941, but his spiritual consciousness can be briefly linked to a fixed future coordinate - a virtual museum dedicated to collecting the history of China's military industrial development during the Anti-Japanese War and the post-war century (existing in the future historical data server). In this museum, he can access any unencrypted engineering and technical information, but he cannot take away physical equipment or weapons. He can only take screenshots (memorize) key drawings. This kind of consciousness projection is essentially a description of a quantum entanglement phenomenon in his brain. As time goes by, his "residence time" and "access rights" will continue to increase due to "effective knowledge feedback."
