The Chinese idiom today is:
“light tea with easy chatting”
Tea is everywhere in Chinese daily life. They have tea while doing everything: during meals, during works, and the most typical way is while chatting, no matter in a serious way or an easy way. Friends reunion is either wine or tea but mostly tea more than wine. Light tea means daily tea.
It’s not especially prepared for the visit. It might be the occasion while a friend just stop by your door way and spend sometime with a cup of tea together. That’s why it follows with “easy chatting”, a whether talk or a street gossip.