OP wrote this cute account of Changmin’s father (who’s a mother tongue teacher) for a hashtag:

https://twitter.com/n_dal_/status/776094053238648832

Translation:

Hashtagged #write a famous saying of a subject teacher
Mother Tongue (KR language)
teacher: our {t/n: ref to teacher speaking about his home’s} puppy is very cute, if you’re curious, search “choikang changmin puppy” on the internet
The mother tongue teacher’s son is choikang changmin

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Credits:

@n_dal_,
Translated by @snxy,
Shared by TVXQ! Express