Ascending the Immortal Summit with My Brother

In a tyrant village, a blood sacrifice occurs once every hundred years. The girl Guoguo is born with a sacrificial mark, destined to be an offering on the altar. Her mother risks everything to save her from the death altar, but their home is shattered and family separated. To cleanse the cursed mark in her blood, Guoguo takes her younger brother Jinbao and ventures into the perilous Xianxia Mountains. Fierce beasts roam, hearts are treacherous, and the ancient shackles of fate weigh heavily. Legend says that at the end of the mountains, the Bashen Platform can wash away all bloodline sins. A lone orphan girl traverses mountains and rivers, vowing to break free from her predetermined death fate. — Description from novelcodex.org