Dear Mr. Shi - Chapter 1. Mysterious man, business tycoon

I returned after 10 years.

The legend of the continent, the battle that brought fame; the Sacred Phoenix Lady, the Windfire Meteor Godrealm saber-art; the pair that ascend and fuse, the golden sun and the blue moon, the fury of the crashing thunder. There is no magic, no battle qi, nor any martial arts in this land. However, there are martial spirits. Ten thousand years have passed since the founding of the Tang Sect on the Douluo continent, and it has declined. A new, proud generation of heaven’s chosen has been born. Can the new generation of Shrek’s Seven Devils rally the Tang Sect and once more compose the song of the Unrivaled Tang Sect?

Su Yun was a prodigy, blessed by the gods. However, life is never so easy. Soon after reaching 6th stage in spirit novice realm cultivation, his progress stagnated due to incurring a rare medical condition.

A few years go by, and Su Yun has spent all his time gambling or drinking, wasting his youth away, but one day everything changes. Qing Er, the only one who stood by him was forced by his clan to be a sacrificial bride to someone she didn’t love, only to be executed by the groom on the wedding night for fleeing. Burning for revenge, he scoured the world for a cure for his rare medical condition from both righteous and villainous side.

Countless years go by, and finally Su Yun not only found a way to cure his rare condition but also gain immense knowledge on a myriad of martial techniques.

But before he could fully cure himself, he received news that the groom suffered an assault that damaged his internal organs. Rather than wait for decades to become fully cured, Su Yun decided to hatch a plan for the assassinate of the groom. Unfortunately, he underestimated the strength of the groom’s family and was killed instead.

Then he regains consciousness. He comes to a realization that he went 15 years in the past. This time, he vowed to protect Qing Er, but first he must cure his rare medical condition. Will he learn from the mistakes of his previous life or is everything still set in stone?

- Description from Novelupdates

Painfully shy and conflict-averse, Yun Ruoyan is a scion to a noble house only in name, a puppet embroiled in political machinations beyond her ken. At the tender age of eighteen, poisoned and at death’s door, she finds herself thrown out into the streets. Her relatives have all been executed, betrayed by her dear husband and her cousin. With her dying breath, she curses her own weakness and swears revenge.

When Yun Ruoyan awakens once more, she is thirteen, transported five years into the past by the will of the heavens. Her death-defying experience has changed her: no longer is she the malleable creature she once was. But more questions await at every corner—what is the truth behind the birthmark that disfigures her appearance? What are the circumstances surrounding her mother’s mysterious death?

Will the phoenix rise from the ashes, or will she fall once more in thrall to fate?