On September 21, SM Entertainment announced, "Ryeowook will receive 5 weeks of training beginning October 11, before officially carrying out his active duty for 21 months�at the base located in Jeungpyeong County of North Chungcheong Province."

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Back in June, Ryeowook had to�postpone�his military enlistment due to Super Junior schedules. This time, it really means goodbye, folks. At least for a little while.�