The sankin-kotai system was firmly maintained throughout the Edo period except during the era of Yoshimune TOKUGAWA, the eighth Shogun, when the regulations were partially relaxed because of financial difficulty.
参勤交代制度は、8代将軍・徳川吉宗のときに財政窮乏を理由に部分的緩和が行われた時期を除き、江戸時代を通じて堅持された。