The official finally tells the truth, but plans to escape with explosives. He almost escapes but ends up blowing up the evidence instead. It turns out Zhu Qi did everything and his wife is already dead. The real pearl is with Guo and there may be more parties after the pearl besides the emperor. Xiao Song has Ran Yan go undercover with him to get the pearl from Guo. (Source: jindreame at MyDramaList)