The Supreme Demonic Princess Is Too Hard to Chase

She is the third young lady of the Mo family, one of the four major families in the Lanmu Kingdom, and the youngest intermediate alchemist in the entire Lanmu Kingdom. The only drawback is that she is a bit mentally retarded, so everyone privately calls her the idiot third lady. During an experience, he was tricked by his hypocritical cousin and unfortunately fell off a cliff and died. However, when she opened her eyes again, she was sinister, bloodthirsty, stunningly talented, and constantly blinding everyone. He is the young master of the Netherworld, ruthless, powerful and domineering. He is born with a pair of blue eyes, and everyone is afraid to avoid him. She was the only one who regarded him as the only one and never abandoned him...