If I were to be an adviser to any of the two, I would surely support a policy of isolation. Chinese emperors and Japanese shoguns had a policy of isolation for a very long time.ALL the Chinese emperors opted for, if not isolation, then at least no modernization - Chines engagement with the West during the imperial period only happened when the Chinese were forced into it. Same with the Shogun - who lost power, the position being abolished due to modernization. So, the only thing the emperor wants to hear is isolation, as they like things the way they are, and anyway Japanese and Chinese rulers regarded foreigners, and Westerners, as barbarians who couldn't possibly have anything positive to offer them other than tribute. The only reason either of them engaged with the West is because they were forced to through threats (or actual use of) violence by Western powers.
