见几而作

Explanation: A few: signs; for: action. Refers to the signs that point to take immediate measures. 　　Source: "Book of copulative": "See a few and make a gentleman, not once all day." 　　Examples: Fuchun child see a move very similar road, Juhuo fled, indeed - those who carry on, (Ming Feng Meng, "ancient and modern fiction," Volume 22)