At the end of 2018 BS, King Mahendra has asked Hira Singh Khatri from India to come to Kathmandu and shoot his birthday celebrations. "Forty-second birthday of King Mahendra", shot by Khatri, is believed to be Nepal's first documentary. This documentary was screened at cinema halls before every film. Khatri not only made several documentaries of the royal family, but also directed two Nepali films including Nepal's first feature film Aama.