If the inner core has the highest temperatures why doesn't the rock it's made melt?

The Earth's inner core, primarily composed of iron and nickel, reaches temperatures of around 5,000 to 7,000 degrees Celsius. Despite these high temperatures, the inner core remains solid due to the immense pressure exerted by the overlying layers of the Earth. This pressure raises the melting point of the materials, preventing them from melting even at those extreme temperatures.