The main reason Gu Shenwei had sent Xu Xiaoyi to Shu-lik two years ago was that Shu-lik was one of the few kingdoms in Western Region which could resist the Golden Roc Fort. There were not many killers in this country.
Gu Shenwei had never been to Shu-lik City during the past two years, but Xu Xiaoyi had been working there all this while to collect intelligence for him.