Cultivation Speed Is Slow, What About Practicing Eternal Reincarnation?

This is a future world where giant beasts in the starry sky are rampant. Various powerful star beasts rule the world! After Xiao Xuan traveled through time, he unexpectedly obtained the Academic Master System. It's just that this system is a little weird! Any martial arts or skills can be learned and upgraded! Even the talents of others can be learned. "Ding... The host has been contemplating stars for 100,000 hours! Successfully awakened SSS-level powers: Stellar Immortality!" "Ding... The host has used the D-level power of lightning 1 million times! The power has been upgraded to SSS level: Thunder!" "Ding... The host has fought 100,000 battles! Combat skills upgraded to LV8: combat power bonus: 20 times!" ………… As long as you practice, you will definitely gain something! And there is no so-called bottleneck. However, when disaster strikes, Xiao Xuan doesn't have enough time! Fortunately, at this moment, Xiao Xuan's second system: the supreme reincarnation system was activated! It allows Xiao Xuan to travel to other worlds and reincarnate again and again! During the reincarnation period, the Xueba system can still be used. ………… In the endless reincarnation and learning, Xiao Xuan's strength reached a frightening level at an unimaginable and terrifying speed. Until that day, billions of demon gods descended on this universe. Before they could start the massacre, a pair of heavenly eyes enveloped the entire world! The next moment, as the world-destroying light bloomed in these eyes, all the demon gods were annihilated!