Senior Sister is Ruthless as a Serpent [Rebirth]

A cruel, controlling, arrogant, aloof senior sister & a rebellious, mischievous, cowardly, adorable junior sister. Before her rebirth, Zhu Zhu was both afraid of and disliked her senior sister, Si Lan. Si Lan was more skilled in martial arts than her, more beautiful than her, and even more ruthless than her. Most importantly, Si Lan seemed to find tormenting her the only amusement in her otherwise boring life! Thus, Zhu Zhu unilaterally refused to acknowledge Si Lan as her senior sister, escaped the valley alone, and spent years happily wandering the martial world, never returning. Unfortunately, she accidentally got entangled in a martial world conspiracy, was murdered by shameless vill...