
Xi'an, China
34x60n.miles=2,040 nautical miles
109x60n.miles=6,540 nautical miles
2,040+6,540=8,580 nautical miles. (this one is closer)
Los Angeles, USA:
34x60n.miles=2,040 nautical miles
118x60n.miles=7,080 nautical miles
2,040+7,080=9,120 nautical miles. (this one is further)