BTS was recently nominated and performed at the 63rd GRAMMY Awards, with their first English-only single “Dynamite”!

Not long after the ceremony, the members began posting selfies and messages online for the fans. RM posted a thirst trap selfie of him working out at the gym, showing off his bare arms.

In his post, he left a short caption, “I came to exercise.”

rm
| Weverse

Although it looked like a simple post at first, netizens began to notice the phone case he was using due to its unique print.

The phone case pattern revealed a traditional Goryeo celadon with the cranes and cloud design symbolizing longevity and auspiciousness.

After the phone case company found out that RM was using their product, they expressed their gratitude through a post on social media.

rm2
| @mimidar.official/Instagram

BTS’s RM using our Goryeo Celedon phone case. Thank you your highness. #RMBTS #BTS #GoryeoCeladoncase

They also posted a thank you celebratory photo on their Instagram with the words, “The dynamite he shot up.”

Thankfully , an artist who is promoting K-POP and Korean culture around the world , is using the Goryeo celadon case of MIMIDAR . We’ve been trying to introduce Korean traditions . So we appreciated everyone that participated in MIMIDAR’s effort????Many people are asking about overseas shipping . It can be shipped overseas . Please, contact us on DM.

⁠— MIMIDAR

Netizens who saw this praised RM for remembering and using the forgotten Korean tradition and history.