Under Radar Control
The day before, while under Beijing Control, we were instructed to fly 3 miles LEFT offset due to traffic. We complied. Then a Martinair was instructed to do the same. The Martinair crew refused to do so citing that it was non standard ICAO to fly a left offset. My understanding is that we should comply with the ATC instruction since we are under radar control. If we are flying the NOPAC route, for instance, then we should fly a right offset if required since there is no radar control over the Pacific. Comments?