Source: AsiaPrince_JKS Official Twitter
"ah ~ so you're on it?"
(meaning ... ah, so you're doing it? you're working on it?)
NOTE: This is a picture of CriJ's official donation of 16,200,000 ￦ (~16,200 USD) to the Nathan Orphanage. The funds were raised through the 2014 JKS Birthday Photo Exhibit in Korea.