What does 乐群 (lèqún) mean? Among the many banners for new students at Nankai Uni is this one:



It says:


  爱国 敬业 创新 乐群
  Àiguó jìngyè chuàngxīn lèqún


The first three I can translate:


爱国 (àiguó） = patriotism (literally "love country")
敬业 (jìngyè) = dedication to one's job
创新 (chuàngxīn） = innovation


But the fourth one doesn't appear on dict.cn.  (And I think I've managed to identify the hanzi characters here.)

Question: What does 乐群 (lèqún) mean?

If we break it down:


乐 (lè) = happy
群 (qún) = group


So I guess it means something like "happy group", which sounds a bit strange.
乐 here means 喜欢, like, enjoy

群 means group

乐群 means enjoy group-living, willing to go well with others, and that kind of idea.