My sister took me to Xiuxian

Qiu Yi is a good young man of the new era. He has depended on his adoptive sister since childhood. But one day, his sister suddenly awakened the memory of her past life and became a time traveler from the world of immortal cultivation. She asked Qiu Yi if he was willing to cultivate immortality with her?
The boy was ignorant and bewildered, and foolishly followed him to the other world.
then……
"Sister, is this what it means to cultivate immortality?"
"You...change your mentality as a cultivator."
"Is this also cultivation?"
"Uh...change your attitude towards cultivating immortals."
"So is this okay?"
"...Change your training posture..."
"Oh!"