Actor Yoo seung Ho did his last good deed before leaving for the army.

It was recently revealed that the actor donated the profit he made narrating the KBS documentary “Studying Human.”

The actor decided to donated his entire paycheck of 6 million won (about $5,500 USD) to the cause the documentary supports.

His split his paycheck in two, the first half he will donated it to episode 192, and the other half to episode 231. The money will help the hard working people featured in the program.

The documentary is about 4 Harvard students who are looking for the best studying techniques. It also talks about the difference between cultures and their methods of studying. The documentary will discuss if studying is involve in career success.

Meanwhile, the actor, who secretly enlisted in the army on March 5th, stating “It wasn't fair to the other soldiers entering the same day,” will receive his five weeks of basic training starting on March 11, then he will be stationed in the 27th division, where he will serve the 21 months of mandatory service.