Tan Qingyuan was a mountain pharmacist who lived on Qiangtong Mountain and made medicine for Liniang.
Before she died, Liniang told her her true identity. Her parents were nobles in the Holy Capital City. An unjust case ten years ago caused her whole family to be wiped out. Her family members died, but she survived. The only thing he can do is to go to the capital and settle the unjust case
Purpose: There is only one truth