most lethal poison in the world. There's only one such place on earth where Purple Grass can grow: at the peak of Toxin Peak in Northern Frontier," Rong Jing replied.Northern Frontier Yun Qianyue thou...ng glanced at her but didn’t say anything.Cloud Qianyue got up and sat straight, reaching out to lift the curtain. Suddenly, Rong Jing stopped her with his hand. Turning back to look at him, she saw h...