In a Cultivation novel, did the protagonist cultivate for 3000 years in his master's time-changing magic treasure?

That magic treasure was made by his master after he spent many years of cultivation and delayed his ascension. The protagonist cultivated for many years but his cultivation was very high. When his master ascended, he said that he had to enter the world before he could ascend. When he first came to the city, he was seen by a mental patient. He thought that he was an expert. Later, he seemed to be a teacher or a student. I forgot...

Answer 1

"I can modify the time of an item" is a Xianxia fantasy novel written by the author Sun Moon One Heart. The general plot of this novel is:

Traversing the Immortal Cultivation World, obtaining a system to change the time of items. After modifying the ginseng roots to a hundred years old, he obtained a hundred year quality ginseng root. Revise the expired pill to ten years ago and obtain the unexpired pill. To modify the incomplete divine art to a thousand years ago and obtain the complete divine art…The story of an ordinary mortal who stepped onto the path of immortality step by step in pursuit of longevity and freedom…
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" The Age of Cultivation " was a fantasy immortal cultivation novel written by the author, China Sword Song. The general plot of this novel was:

Three Immortal Emperors and countless Immortals had fallen in a single expedition.
A small space photon computer floated in the universe.
A humble cultivator had accidentally obtained it, and from then on, he had embarked on this magnificent era of cultivation. He had already completed the 1.3 million words of " Glory of the Mages " and the 1.7 million words of " Super Equipment Refining ". The children of the book famine could go and take a look.
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" Shura Magic " was a fantasy and oriental fantasy novel written by the author, Fifth Brother. The general plot of this novel was:

A foolish magic genius appeared in the Demonized Kingdom, Xiu Yue. In the world of the strong, he could use a special spell to break through the layers of fog of history and reverse the gears of time. In this world where there was always a sky beyond the sky, how far could Xiu Yue go…
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'The Greatest Warrior of All Time' was a fantasy novel written by the author, Yin Weizhe. The general plot of this novel was:

A cultivation genius who had been reincarnated for ten thousand years, a cultivation era where technology and magical equipment coexisted, and a magnificent journey of cultivation were all in the hands of the number one expert in history.
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Refined Qi for 100,000 Years was a fantasy novel written by the author, Little Biao. The general plot of this novel was:

A hundred thousand years ago, he was the founding disciple of Sky Mist Sect. His master had ascended, and he was refining Qi. 90,000 years ago, when his martial nephew ascended, he was refining Qi. Fifty thousand years ago, the old dog that guarded Sky Mist Sect had also ascended. He was still refining his Qi. 30,000 years ago, the old tree at the foot of the mountain also became a demon. He failed to transcend the tribulation and died, but he was still refining Qi. 10,000 years ago, Sky Mist Sect's 9872nd generation disciple, Zhang Wuji, also ascended. Xu Yang silently refined his Qi. After 10,000 years of closed-door cultivation, he finally broke through to the 9,999th level of the Refinement Stage! Ten thousand years later, he broke out of seclusion!
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Qi Refinement for 5,000 Years was a novel written by the author during the day. The general plot of the novel was:

He was originally a cultivation genius, but he was actually trapped in the Refinement Stage for five thousand years. After five thousand years of ups and downs, he laughed and talked about the vicissitudes of life for five thousand years. Let's see how the male protagonist breaks through the shackles and reaches the peak in the city.
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Master Immortal was a fantasy novel written by the author, Little Overlord XX. The general plot of the novel was:

After being reborn, a good-for-nothing was still a good-for-nothing. Relying on a cultivation technique left behind by his father that had been studied countless times, he finally obtained a new life. After experiencing the Thousand Tribulations, the imagined path of finding his relatives became more and more complicated and treacherous, because he had long been swept into the abyss…
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The World Traversing Cultivator was a sci-fi time-travel novel written by the author, Mu Ran. The general plot of the novel was:

A modern cultivator had started a journey through time and space when the apocalypse arrived.
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" A Million Years of Hard Work and I Became a Grandmaster " was a fantasy novel written by Wenren Muyuan. The general plot of the novel was:

Ding!" You have successfully logged in for a million years at the Mountain of Spiritual Altar and Innerheart. You have received one point and one Spirit Gathering Pill." The invisible posturing is the most fatal. Host, please maintain your perfect persona and shock everyone. Chu Zhong Tian, who had been trapped on a foggy mountain, was finally released by the system. The experience bar of the first level of Qi Refinement was as high as nine digits. He, who had no cultivation talent, was told by the system that the saints in this world would die at any time. After being locked up by the system for a million years, even his dog had ascended. However, he had saved 300 million points in the System Store and a million Spirit Gathering Pills. He wanted to cry but had no tears. He could only rely on taking in a few disciples to protect himself.
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The Restorer was an urban supernatural novel written by the author, Yan Yan. The general plot of the novel was:

Cultivate one's body, cultivate one's heart, and cultivate one's physical body! Cultivate the Heaven and Earth's Wreck, cultivate the Universe! Everything in the world could be repaired!