The Zhurong rover on Mars was designed only to communicate with its companion orbiter, Tianwen 1; 月球车原始设计就是通过天问一号中继通讯(天问一号早已传回许多月球车图片数据),原始并没设计与欧洲mars express通讯 因为也许会出现:however, the rover has long outlived its planned mission and the orbiter is no longer able to do as much data relaying. 也许月球车会超常发挥工作超出他的设计期限(美国月球车超常服役了),而天问一号缺没有超常服役,因此才与欧洲合作,在当年十一月份多次链接月球车与欧洲mars express,最终测试成功盲受数据并传回地球。这不就是个备份系统。