以心换心melt以命换命mel
[yĭ xīn huàn xīn melt yĭ mìng huàn mìng mel]
'Trade Heart With Heart and Live For Each Other' shows someone hopes that we all give what others need, expecting that if we treat people kindly, people will reciprocate likewise. And the two added words “melt/mel” symbolize the process of melting down barriers or giving one's all.