Hoa Minzy's costumes in the "Noi dau giua hoa binh" music video, the soundtrack for the film "Mua do", were steeped in tea and coffee to create a vintage look.

Phuong Nam - who plays Ta, the squad leader in the film "Mua do" (Red Rain) - said his grandfather, who died in the southern battlefield, inspired him while portraying a soldier.

Before building the "Mua do" film set by the Thach Han river, the crew had to clear mines, as the area still contained many unexploded ordnance from the war.