Hung Fa Chai is a hill in Robin's Nest Country Park, New Territories, Hong Kong. With a height of 489 m, it lies 500 m to the northeast of Robin's Nest, just inside the Frontier Closed Area south of the border with Shenzhen in mainland China. On old Colonial maps of Hong Kong, it was marked as Ben Nevis, after the highest mountain in Scotland. It is the most northerly of all Hong Kong's hills over 300 m featured in the list of mountains, peaks and hills in Hong Kong. Hung Fa Chai (紅花寨) has the same 'red flower' root (紅花) as Robin's Nest while Chai (寨) can mean either 'stockaded village', 'camp' or 'mountain stronghold'.