Contrast The moon is the light and the sky is dark aspect. They are compared next to each other. It shows the opposites of light and dark making the moon stand out.
1950’s Hong Kong Inspires New Photography Series by Fan Ho 何藩 | http://www.yatzer.com/fan-ho-a-hong-kong-memoir
This site gives you details on on the camera specs, including settings for each picture. Normally I appreciate the color in the sprinkler park pictures but this is anotehr way to look at the same setting.