Period: A State of Purity (2020)
- Genre: Documentary
- Release Date: 2020-02-20
- Runtime: 0h 7min
- Language: བོད་སྐད་།
- Production Company: Onion Films
- Production Country: Nepal
- Director: Rewati Gurung
Tibetan Buddhist nuns from the Thupten Choling monastery in the Himalayan foothills discuss their mentruation practices.
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| Camera | Rewati Gurung | Camera Operator |
| Camera | Crystal NG Sing Yung | Camera Operator |
| Directing | Rewati Gurung | Director |
| Crew | Tsering Wangmo | Script |
| Editing | Gary Wornell | Editor |
