航旅头等舱次数

中国航信系统记录的指定旅客在最近12个月内乘坐航班头等舱的总次数。时间范围可以根据客户需要动态调整，即可以调整为最近6个月、24个月、36个月等

The total number of first-class flight trips taken by designated passengers within the most recent 12 months, as recorded by the TravelSky system. The time range can be dynamically adjusted per customer requirements, including but not limited to the past 6 months, 24 months, 36 months, and so on.