Fantasy: I have a system that returns the effect of cultivation ten thousand times

Yang Feng traveled to the fantasy world and awakened the system that returns the effect of cultivation 10,000 times. No matter what he cultivates, the effect of cultivation will be returned 10,000 times.
Ding! You have cultivated the Tempering Body Art once, and the cultivation effect is returned 10,000 times. Your strength speed is doubled.
Ding! You have cultivated the Tiger Fist once, and the cultivation effect is returned 10,000 times. Your Tiger Fist has reached the Great Mastery, and you have comprehended the Tiger Fist, and the power is doubled.
Ding! You have carved a rune once, and the cultivation effect is returned 10,000 times. Your rune skills have reached the mastery level and you can make runes independently.