C576 There's Something else Going on

The second day after Rong Hanchi left, Feng Baiyi told Feng Nan to go to the guest room at home to collect Rong Hanchi's blood sample. He bled so much that day, and although it was cleaned, there was still a little blood that couldn't be washed away!

Coincidentally, there was also a cotton ball that Su Yan had missed when her back was broken, which was stained with Su Yan's blood