The wicked concubine laughed. "Aiyo~ it's just a mere test. With a little reward here and there and a little plan, don't you know how easy it was to change the result? It's not like all the workers in the palace are loyal to one person only. I just needed money to do the talking. Besides, you didn't let Han Xiang take the blood in front of you because... you hated her, right? That made everything easier for me. I merely needed to change the blood when it was delivered to us," she said leisurely like she was telling a bedtime story.
In the end, she also blamed this to the Han Emperor. He was the one who made it easier for her to bully little Han Xiang. If she could say, the stupidest person here was the Han Emperor --- it was so easy to manipulate him.
There was no trace of guilt in her expression, showing how much hatred that she harbored inside her heart towards the mother-daughter pair and also the Emperor.