Song Seung Heon showed off his received gift from his friend So Ji Sub. 

On May 25, the actor posted on his Instagram to reveal that his longtime friend So Ji Sub sent him a coffee truck to the set for his upcoming drama 'Voice 4.' It was So Ji Sub's way to show that he is cheering for him. 

Song Seung Heon posted some photos of himself posing in front of the coffee truck and wrote a thank-you poster. He added that it was hard to explain to every staff member who thanked him and sent him the truck. He then said that to put his name next time. 

The coffee truck that So Ji Sub sent has a banner that says that he is rooting for actor Song Seung Heon and all of the cast and crew of 'Voice 4.' Moreover, another poster next to the truck reads that he hopes that the upcoming drama 'Voice 4' will be filmed safely.

'Voice' first aired its first season back in 2017. It is a drama about an emergency call center and the employees who fight crime using limited information from the urgent calls they are receiving.

The upcoming fourth season will show the Golden Time Team against the vicious murderer who has extraordinary hearing abilities that match their own. 

Lee Ha Na will be playing Kang Kwon Joo, and she will be a voice profiler in the fourth season. On the other hand, Song Seung Heon will be playing the cast as Derek Jo. He is a unit leader at the Los Angeles Police Department and found himself winding up and collaborating with the Golden Time Team.  He is a strict perfectionist that does not accept even the slightest mistake.

Watch more about the drama's upcoming season, 'Voice 4', premiering this June 18.