Daily Chinese Idiom Guessing Game
To follow a clue to find the truth or to track down something.
摸寻找。比喻按照某个线索查究事情。
《人民日报》1982.6.30由此顺藤摸瓜，很快破获了这起盗窃案。”
The detective followed the small clue like a vine, eventually finding the criminal by 'shun teng mo gua'.