Lou Ji was originally an innocent and sinister black-hearted lotus, capable of killing gods and Buddhas, but he had no choice but to meet a green lotus like Lin Wuxin in troubled times.
Qing Lian's brainwashing was very successful and thorough. Once Black Heart Lotus was bleached, it caused a fatal disaster and was beyond redemption.
In a word, the leader of the Demon Cult is a little white lotus.