"Hwajodo" means a traditional painting of flowers and birds.
On the back of the T-shirt, "Hwajodo" is written in Korean.

It compares a pair of male and female birds sitting on flower branches and rubbing their beaks against each other to a happy married life.
Flowers and birds are the most enjoyed objects of beauty by our ancestors,
and have been widely described in embroidery works as well as paintings and various crafts.