Du Changting's curiosity about Su Qing stemmed from Feng Bozhou—the police captain who had extended an olive branch to her on the train to Beijing.
Feng Bozhou and Du Changting were classmates and childhood friends who had always been very close. After failing to recruit Su Qing, Feng Bozhou learned she was from a village in Xiyuan County, so he naturally brought it up with Du Changting.
As it happened, Du Changting already knew of Su Qing. His most vivid impression was of her jumping into a frozen river to save someone in the dead of winter, all without any equipment. Even for a trained professional, diving into an icy river without gear was an incredibly dangerous feat.
Then, through Feng Bozhou, Du Changting learned that Su Qing also possessed incredible combat skills. He was instantly overcome with a profound curiosity about her.
