Due to constant overnight shooting of the drama 'Ghost', So Ji Sub couldn't attend Jung Joon Ha's open house.

Oh Joong Suk, a photographer, tweeted at Jung Joon Ha and said, "So Gan Ji(which means he is full of style and good looks and is So Ji Sub's nickname) is very disappointed and sad about how he couldn't attend the open house due to over night filming." And to this Jung Joon Ha replied, "We waited for him for a long time too... but I heard he always has over night filming these days."

A long time ago, Jung Joon Ha showed off his friendship with So Ji Sub on 'Infinite Challenge' and had everyone talk about it. But, So Ji Sub couldn't attend Jung Joon Ha's first open house after marriage due to 'Ghost'. He is currently working hard in the SBS drama 'Ghost' as a main character.

To this, netizens said, "It's a disappointment that So Ji Sub couldn't be with the Infinite Challenge members", "Oh they must be really close", or "I am sad for them"