Corona version 9
The model uses materials that may not be displayed correctly in very old versions of the engine.

Sliding panel curtains or Japanese curtains are an alternative for roller blinds in modern interiors. More functional and mobile panel curtains eliminate glare (as for example between roller blinds)

They are suitable for zoning space both in private interiors and in office spaces. They can serve as a textile sliding partition or as a wardrobe compartment instead of doors

The model is presented in two materials (rice paper and linen) and in four shades
The panel consists of separate easily editable elements
Objects are partially attached textures and materials have logical names
Texturing UnwrapUVW

Curtain rods for sliding panel curtains: https://www.decorwall.ru/accessories/mottura/karnizy-dlya-razdvizhnykh-paneley/oriente-2/ 
Curtains in interiors: https://ru.pinterest.com/pin/336010822210496884/ 
https://ru.pinterest.com/pin/22447698130866946/ 
https://ru.pinterest.com/pin/83316661830382309/ 

For Corona render it is recommended to install a version not lower than 1.5 since the glossiness of materials is configured with PBR in mind.

Who works in a V-Ray version lower than 3.1 be careful in the materials in the BRDF section there is a Microfaset GTR ( GGX) if your version is older than 3.1 then the BRDF field will be empty. Choose Blinn Phong or Ward – which is preferable for you