Quick Transmigration: The Cannon Fodder Fights Back

[No fixed CP; whether that changes later depends on my mood. Strong female lead.]

Fusang, a top scientific genius in the vast universe, dies of old age and is talked into visiting various worlds by a System calling itself “Tea Treasure.” Her task is to fulfill the wishes of wronged and resentful souls...

Tea Treasure: Ahhh, I can't believe I bound myself to the Ancestor! My irresistible Ancestor, mmm, mmm~

Fusang: Isn't this just being a wage slave? And the kind who has no idea what century she'll finally retire in...

(Fusang tree: The Classic of Mountains and Seas, “Overseas East”: Above Tang Valley stands Fusang, where the ten suns bathe, north of the Land of Black Teeth. “Great Wilderness East” also says: In the Great Wilderness, there is a mountain called Nieyao Yindi. Upon it stands Fumu, a tree three hundred li tall, with leaves like mustard. There is a valley called Warm Spring Valley. Above Tang Valley stands Fumu. One sun arrives as another sets, and each rides upon a crow. The name comes from The Classic of Mountains and Seas.)