text: Since Minamoto no Yoritomo launched the shogunate , the true power had been in the hand of the Shoguns , who were mistaken several times for the Emperors of Japan by western countries .
simplified: Since Minamoto no Yoritomo started the shogunate , the true power had been in the hand of the Shoguns , who were mistaken several times for the Emperors of Japan by the Chinese government .