C500 Leng Shuo Hidden Identity

Whenever Loong Nuanyi mentioned Heize, a faint sadness would appear in her eyes. She looked out the window at the night sky and said, "He's the most important person to me."

"Your brother? Lovers? " Leng Shuo asked for more details.

Leng Nuanyi pursed her lips and smiled, "He's not my brother! I don't want to be his sister either. "

This answer could not be any clearer