CLEARING THE BLUE DOOR

SHEN JI YUN proceeded on telling the two the answers to the three mysteries.

"Mystery 1: Who poisoned Prince Lin Rong and why?  The answer, as we have already guessed, is his second son – Lin Mo.  Why did he do it?  Apparently, he bears a grudge against his father for the death of his mother.  A lowly servant girl who was schemed against by the official wife.  The old prince didn't do anything about it, so Lin Mo hated him ever since. That hate only deepened because of the preferential treatment the old prince was giving to his eldest son.  Lin Mo thought that tonight would be the best chance to kill him.  And so he did.