indulge in pleasure and forget home and duty;so happy as to forget one’s home country
? 宰相告誡即將出國的官員切勿～。The prime minister urged the officials who were going abroad not to indulge in pleasure and forget home and duty.
樂不思蜀
indulge in pleasure and forget home and duty; abandon oneself to pleasures
樂不思蜀lè bù sī shǔ
蜀：指三國時的蜀國。快樂得不再思念故國。比喻樂而忘本。indulge in pleasure and forget home and duty, so happy as to forget home and duty