Martial King's Retired Life - Chapter 33Book 15:

After being set up and killed by her half-sister whom her ex-boyfriend had cheated with, Mu Siyin woke up one day to discover that not only was she alive, but she had traveled back in time to 2 years before her death.

[space + ancient times kingdom building + escaping from famine]

The big shot from the future, Bai Wutong, transmigrated to ancient times with her space pocket! Before she could feel happy, she found herself in a chaotic world! There was murder, robbery, schemes, sky-high prices, and many other things happening all around! The moment she arrived, she had killed two people. Then, she also kindly saved someone, but was deceived and stalked as the person insisted on following her. If that’s the case, then don’t blame her for using aggression in return!

After she finally managed to settle down, she was assigned to the frontier to develop the lands. The remote lands were out of anybody’s control, and there was nothing more that Bai Wutong could ask for. After a few years, Bai Wutong accidentally led the richest man of the previous dynasty, the prime minister, the commander of the secret guards, a great scholar of the dynasty, the holy maiden, as well as the divine doctor… and turned the barren land into a rich, noble town that everyone desired. When the emperor and his ministers came to admire the place, they were dumbfounded. That man who was pouring tea beside Bai Wutong… Wasn’t that the eldest son of the previous emperor, who had been dead for many years?!

Jacob Steve, an Old Man, died at 116 after living a whole life.

But Jacob always had a dark side, which he always suppressed and hid from others.
However, in the later years of his life, when death was inevitable, he understood there wasn't any point in having wealth, knowledge, or desires if you couldn't have a life to enjoy them.

He became obsessed with fabled immortality and devoted his reaming life to extending his fleeting lifespan, but just like any other failed.

However, he mysteriously got another chance at life and found a way that led to fabled immortality.
But he was also forewarned that the way led to it was filled with blood and darkness!

In the end, Jacob chose it anyway with no way of going back, and it was also the start of his suffering and his icky, brutal journey toward the 'Immortality' he wanted so badly!

The Immortal Path led to Longevity and Sovereign was heading in ease. When the Longevity was no longer in ease, all living beings were just prisoners. Conspiracy, internal strife, and the invasion of the others, all of it emerged together. 

In such a world, there was such a young man. He made his way upstream, stepping on blood, defying the emperor, destroying the various kings, and slaughtering his way through the hundred clans to form an Immortal Path towards the throne of Sovereign! The Immortal Path was endless, while the Sovereign was limited. He used his blood to forge his immortal legend.

- Description from Novelupdates