jì / zhě / shùn / téng / mō / guā / zhōng / yú / chá / qīng / le / zhè / bǐ / zī / jīn / de / lái / yuán

记者顺藤摸瓜，终于查清了这笔资金的来源。

The reporter followed the clues and finally uncovered the source of the funds.