Zangshuge Has Been Investing for Hundreds of Years, I Am Invincible

Xiao Ye, who traveled through the fantasy world, suffered serious injuries and his cultivation level declined again and again. Even his position as an elder will be deprived of him! At this time, the billion-fold return system awakens, and he learns the art of qi-watching, which can predict the luck of the people in the world. Just invest in it and get rewards back! The stronger the target's luck, the higher the return rate, which can even reach 100 million times! The girl in purple who comes to the library is actually a hidden ice mysterious spirit with rare golden luck? Invest in a book of Xuanjie Kung Fu and get back the most powerful "Sage Xuanlong Kung Fu" in heavenly class! The young man being chased by his enemy is actually a swordsman prodigy who is unique among all? Invest in a book of kendo experience and get back your supreme sword power! This poor little guy with no talent for cultivation actually has an unparalleled talent for alchemy! Invest in a basic alchemy book and gain the inheritance of the Alchemy Emperor! … A hundred years later, countless great emperors recalled the past: "If it weren't for Elder Xiao, I would have starved to death on the streets!" "Without Elder Xiao, there would be no Swordsman Supreme today!" "... Have you all been helped by Elder Xiao?"