C302 To Leave with a Letter

Only someone with access to the library would know about this poison. Only the Lau family has that privilege. It must have been Pei Xuanling and Lau Qingyao's people who tried to kill me, and my brother was poisoned trying to protect me.

"You are my sister, my only family. I swore to protect you for my entire life, even if it costs me mine," Shaang Qingya said earnestly.

In that moment