便 人 biàn rén : somebody who happens to be on hand for an errand

巧 qiǎo : opportunely; coincidentally; as it happens; skillful; timely

Big5: , Unicode: 5de7 (巧),
Links: MT, Cantonese, Ld, Chinese Language

一 旦 yī dàn : in case (something happens); once (something becomes true, then...); in one day

正 好 zhèng hǎo : just (in time); just right; just enough; to happen to; to chance to; by chance; it just so happens that