@ch0c0l@te,
Ah well.. bosses know - they just keep quiet

Eh ... depends on your boss. I'd say many bosses just keep quiet ... but also don't know ...

I had see this happens to people who does not socialize much but have "Ren Yuan" and get promotion while those who work hard still stay at the same level as he/she does not have "Ren Yuan".

Is this a soft skill or more on the way we do things?

'ren yuan' is important not only in work but your life, family, friends, relationship, etc.

TS, any chance that you are actually trying to say: 'ren ji kuan xi'

"guan xi" is actually the new rage, u can see a lot internet articles about it as investors learn about investing in china. its a relevant read to all of us, though.

i mean , duit kopi siape tak suka (bagi)...

i think what TS meant is soft skill.

very true, especially part in bold. People who have this skill tend to get noticed (and thus promoted) faster than others, even though their actual work could be of substandard quality.

I thought thw word for interpersonal skills is 人際?