Complex sentence: With the help of a modern electronic rangefinder, they followed Jing Pu Railway from Dangjiazhuang Station to six kilometers north, to a village called Chaomidian, which is north of the crash site.
Split into simpler sentences: With the help of modern electronic rangefinder, they followed Jing Pu Railway from Dangjiazhuang Station to six kilometers north. It was a village called Chaomidian, which is north of the crash site.