Yunho attended on the 24th the 2018 F/W Beyond Closet collection show at the 2018 Hera Seoul Fashion Week.
Same with Changmin, w korea posted a video of him preparing for the show, and Yunho reposted it with a comment

Video:

#어제 #패션위크 #좋은 #경험 #감사합니다 😀
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Regrann from @wkorea – #W_OntheWay
비욘드 클로젯 쇼에 참석하기 위해 피팅에 나선 #동방신기의 #유노윤호. 고민 끝에 헤어 컬러와 어울리는 네이비 슈트로 결정! #광주 와 #서울 을 오가며 동분서주한 그의 하루를 밀착 취재했습니다. @wkorea#editor_sy
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Yunho of #TVXQ! on his way to Beyond Closet 18FW show. – #regrann

Translation:

#(for the) nice experience #thank you very much 😀

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Credits:

yunho2154 : here,
Translated by @snxy,
Shared by TVXQ! Express