The Mysterious Informant
When Chen Shihong left the Yao Family's residence, he went to the village where Shao Chen registered into the harem. He got this information from the guard that had recorded Shao Chen's name himself at the time.
After arriving at the village, he was asking around about Shao Chen but no villager noticed someone with the characteristic of Shao Chen.
"It is a small village. There will be no possible for us not noticing a girl with a rare brown hair," one of the middle-age villager told Chen Shihong.
Not only her, other villagers also told almost the same answer when being asked. At last, Chen Shihong concluded that Shao Chen may be outsider that dwelled in the village in a very short amount of time.
So, Chen Shihong changed the strategy. He now asked the villager about outsider that may had arrived on the village recently. As this village was very remote, seldom did outsider come so it was easy to remember each of them.