The appearance of the Tibetan fox and the people from Tibet sharing certain facial characteristics is coincidental and not due to geographic influences shaping their faces similarly. The Tibetan fox has evolved to have a unique facial structure, including a broad, square-shaped head and narrow, slanted eyes, which is an adaptation to its environment and lifestyle.
Humans from Tibet have their facial characteristics shaped by a combination of genetic factors and evolutionary adaptations to the high-altitude environment, such as larger lung capacity and certain facial features that might help with respiratory efficiency. However, there is no direct link between the facial structures of the Tibetan fox and the people living in Tibet beyond this coincidental similarity.
Overall, the resemblance is superficial and does not have a basis in the geographical environment shaping facial features in the same way for both species.