海誓山盟是什么承诺不离不弃是什么诺言
[hăi shì shān méng shì shén me chéng nuò bù lí bù qì shì shén me nuò yán]
This reflects disappointment or doubt towards grand promises (loyalty) expressed in vows (like in marriage or deep friendships). Such strong commitment seems like something unreliable for the netizen.