Hard working Shin Dong proved his work ethic as a CEO by promoting his online shopping mall at 6 in the morning.

Super Junior's Shing Dong posted a picture with Ryu Wook on his twitter on Dec. 29.

He left a comment  "My new digital camera's new feature. 'Cartoon feature' pretty? a shot with Ryu Wook. Today, SBS 'K-Pop Festival' is on. Everybody, watch it on time. And search for 'Shin Dong Shopping Mall' or 'Shin Dong's Multisung'.

'Shin Dong's Multisung' is a online multi shop that offers good deals for clothes, bags, watches, and etc.

Netizens commented "I want to see the original copy", "No sleep?", "Working very hard".

Photo: Shin Dong's twitter