Zir Khaki 6 (زیرخاکی قسمت ششم) is a Iranian Serial that is very popular. The series Zir Khaki written and directed by Jalil Saman and produced by Reza Nasirinia. will be aired every night during the month of Ramadan on the One Sima network. This lovely Persian serial has a total of 50 parts. You can watch Part 6 of Zir Khaki here