Who said brother can't cultivate

This is the story of a modern person who traveled to ancient times and became a brother. The brother was very weak and his strength was zero, but he was picked up and raised by a high-ranking cultivator in this ancient world.So he embarked on a journey in the realm of comprehension, harvested a fan (teacher) brother on the way, gave birth to a child, and lived an ideal nourishing life of eating, drinking and sleeping.