Since 2009 NASA's Lunar Reconnaissance Orbiter (LRO) has been scooting around the Moon once every 2 hours. Among the various onboard instruments is a cluster of imaging cameras: two narrow-angle and one wide-field, with multi-band capabilities on the narrow-angle devices, using a clever 'push-broom' approach as the spacecraft motion sweeps the sensitive sensor arrays over the surface below. Altogether these are referred to as the Lunar Reconnaissance Orbiter Camera, or LROC.

LROC offers a way to peer down on the lunar farside, and to try to catch a glimpse of the CNSA's most recent mission: Chang'e 4, that made it onto the Moon's surface on January the 3rd, 2019. 

On February 1st 2019 LRO passed almost directly over the landing site at an altitude of 82 kilometers - where LROC's resolution is about 0.85 meters per pixel. Here's the full image as released: