I Am A Matchmaker on Taobao - Chapter 22:

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

Her – a glutton without troubles or worries who crossed over and became a young fat chick with a deep vengefulness.

Him – a young master of the number one power; a two-faced man with elegance and charming, good looks; he is the chosen one of the former saint god and a man who will only bend his back for her alone.

This domineering crossover’s slogan is, ‘Don’t touch if it is this sister’s, put it there if it isn’t this sister’s!’

…watch how the Domineering Glutton and the Two-Faced Venerate Emperor create sparks as they meet and collide, stirring the whole Spirit Treasure Continent into turmoil, how they fall for each other and how they kill each other, how life and death severs love.

- Description from Novelupdates

[You have just awakened your first dragon: SSS-Rank Fire Dragon.]Drahon was born with dragon-like horns, and because of that, his parents abandoned him at an orphanage. Mocked, bullied, and branded a freak, he never knew where he truly belonged.Until one day, while serving punishment, he stumbled upon a mysterious egg...A dragon egg that opened a portal and led him into The Dragon Game.[You have summoned an SSS-Rank Demon wrymling.][You have evolved your SSS-Rank Primordial Frost Dragon into a Multi Fire-Frost Dragon.][Upgrading Fire-Frost Dragon Roar ×10...]Bond with dragons and summon them in battle? Of course. All Ranked 'SSS'Draconic skills? Master them.Monster bosses? Shatter them.Half-dragon, half-monster abominations? Burn them.Mandatory roleplaying? Absolutely. Rule kingdoms, command medieval armies, and go to war.Enemies? They’re just EXP.And just after Level One, he uncovers the shocking truth behind the game’s existence...And discovers the reason for his horns: he’s half dragon, and that grants him the ability to transform into a half dragon, half human form.[You have just slain a cerberus-class half-dragon monster.][Absorbing essence...]And now?He’ll be more than the horned freak they abandoned —He’ll become Dragon Lord.[A/N: It gets much better after level one]

Everyone believes Lin Zhao Xi’s a genius.

Only she knows she’s looking back on years of experience in math competitions as a basis to “cheat”.

Until one day, her idol quietly looks at her.

* * *

Time and space overlap, returning thrice.

— The past can change you.

- Description from Novelupdates