Li Chen didn't account for the adversarial relationship with Miao Zheng and, on the second day, directly took An Cheng to confront them.
Just as he expected, regardless of whether it was the Gu King or other matters, it was all orchestrated by Miao Zheng and his group; most of the mountain village people were completely unaware of Miao Zheng's plans.
However, when they inquired about the Gu poison afflicting Zhang Jing, everyone in the village merely stated that the few most proficient in Gu art, including their clan leader, were presently absent.
Miao Zheng certainly wouldn't be in the village; as to where they went, only Li Chen might know best.
But with no survivors left, it meant the path to Miao Zheng was cut off. Helplessly, Li Chen could only seek other methods.