A vertical garden hanging off a 10-storey building in Xi'an, Shaanxi Province, has gone viral. Installed with an intelligent fog system, the outdoor 'hanging garden of Xi'an' has also been described as "a misty forest." [Photo: VCG]

A vertical garden hanging off a 10-storey building in Xi'an, Shaanxi Province, has gone viral. Installed with an intelligent fog system, the outdoor 'hanging garden of Xi'an' has also been described as "a misty forest." [Photo: VCG]

A vertical garden hanging off a 10-storey building in Xi'an, Shaanxi Province, has gone viral. Installed with an intelligent fog system, the outdoor 'hanging garden of Xi'an' has also been described as "a misty forest." [Photo: VCG]

A vertical garden hanging off a 10-storey building in Xi'an, Shaanxi Province, has gone viral. Installed with an intelligent fog system, the outdoor 'hanging garden of Xi'an' has also been described as "a misty forest." [Photo: VCG]