- Both are part of NCT 127.
- Both were SM Rookies.
- They are both Korean.
- They were both born in Seoul, South Korea.
- Jaehyun was born in 1997 but Haechan was born in 2000.
- Jaehyun is an Aquarius and Haechan is a Gemini.
- They are part of the South Korean boy group NCT .
- Jaehyun and Haechan are currently roomates.
| To view the JaeChan gallery, click here.