The "Flower Boys Next Door" traffic light siblings recently revealed a picture. As they were taking a break from filming for the tvN drama "Flower Boy Next Door" Park Shin Hye, Kim Ji Hoon and Yoon Shi Yoon took a picture with their bright colored jackets. On the official Twitter of "Flower Boy Next Door," the staff members wrote on the 23rd, "our traffic light siblings are watching you. To see if you are watching "Flower Boy Next Door" or not. Watching you." The actors were making blank facial expressions and made people laugh. Netizens commented, "they are so cute," "they look like a traffic light," "it must be extremely cold," "I like all three of them."