Gu Shenwei was able to successfully capture Shangguan Tian alive because he got a clear understanding of a fact: Prime Minister Shi hated and feared the Dragon King and would not easily sever his own relations with Golden Roc Fort.
Therefore, as soon as Shangguan Tian disappeared, he deduced that the Second Young Master was still hiding near Prime Minister Shi.
Under such circumstances, he had to figure out a way to make Shangguan Tian surrender and admit defeat without disturbing Prime Minister Shi.
Chu Nanping successfully attracted the Golden Roc Fort killers' attention, and even though he was in a dangerous situation, Gu Shenwei was certain that before the killers found out where he was, they would never kill or harm Chu Nanping.