人情如酒一杯封喉
[rén qíng rú jiŭ yī bēi fēng hóu]
This nickname conveys the idea that human relationships can be intoxicating, just like a good wine. However, they also imply an edge, hinting at how complex and potentially painful or deep (to the point of being heartbreakingly sharp, 'enough to cut off your throat') emotions related to relationships could be. A bittersweet metaphor about human interaction.