Did Cui Ge Kan come to the mountain every day? Science has borders, if science has no borders, why does the 7-nanometer chip manufacturing technology not sell, and the phenomenon of brain drain will pick up the ladder. But calm down

Did Cui Ge Kan come to the mountain every day? Science has borders, if science has no borders, why does the 7-nanometer chip manufacturing technology not sell, and the phenomenon of brain drain will pick up the ladder. But sit back and think about it, is science really "borderless" as those people say? North American video of Trigo