A coincidence of chance and a strange combination of circumstances.
Those three years were Xu Yi'an's most glorious three years, but they were also three years full of dangers. In those three years, the ministers had offended the king thoroughly, and in those three years, the concubines had annoyed the emperor enough. Xu Yi'an endured those three years, but left quietly on the eve of the wedding, burying those three years under the surface, just because the emperor told her that when he met her for the first time, she sat on the ground and cried. So Xu Yi'an knew that it was wrong from the source. That person should be her junior sister Hua Yiyan.
Conception: