Can you recommend some long fantasy novels about alchemy, weapon refinement, and array formations?

An ultimate warrior, the one and only Alchemy Emperor, Ling Han, had died in his quest to achieve godhood. Ten thousands years later, and he, with the "Invincible Heaven Scroll", was reborn in the body of a young man with the same name. From then on, winds and clouds moved, as he set himself against uncountable geniuses of this new era. His path of becoming a legend has begun once more. At all eras, and underneath the heavens, I am the strongest!

Keeley, a simple plain Jane, hits the jackpot. [No, she did not win the lottery!] At least that's what she thinks when she marries the most eligible bachelor in New York City: Aaron, a wealthy cold-hearted heartthrob and Tycoon. She wants to show the world that she deserves her position and bends over backward to fit into his world. One beautiful day, Aaron hands her a document asking her to sign. A divorce paper... "She's pregnant, and I need to take responsibility." That is the last thing that keeps on playing in her mind before she takes her last breath. Keeley dies, a 'hit and run'. [End of story. Not!] For some unexplainable reason, she wakes up as her younger self. A young high school girl, around the time when she first meets her cheating husband. Remembering her life with Aaron before she died, she makes a promise to herself that she will do everything in her power to avoid him at all costs. Will she be able to keep her promise when Aaron has his own plans as well, specifically for her? Or will she repeat history and fall for him once more... Why not journey with me and find out the truth behind their story. *Cover art by polkadottedscrunchie*

After being homeschooled his entire life in his isolated farm, Alex finally makes his way to a big city where he finds out about a new VR game called Eternal Cultivation. By luck, Alex receives the Inheritance of the Alchemy God as his reward. Using that inheritance and masters that care for him, Alex begins to learn about the new world he has found himself in while pursuing both Alchemy and Cultivation to the pinnacle. Join my discord: https://discord.gg/ru3rgCKFvx

Zhou Yun transmigrated to a fantasy world and was bound to the God Tier Epiphany System. He could enter into a state of meditation and achieve epiphanies that others desired regardless of what he did. Other cultivators immersed themselves fully in hardcore training in order to achieve some improvements in their swordsmanship. On the other hand, Zhou Yun achieved enlightenment in swordsmanship by merely picking up a sword and playing with it a little. His swordsmanship attained perfection in an instant. Other cultivators trained hard in order to break through to the next plane. Zhou Yun merely swept a glance at the fallen leaves in the courtyard. Then, he had an epiphany and broke through to the next plane on the spot. He had insights into everything in the world, and his rate of plane progression skyrocketed. When other cultivators finally became powerful existences after going through various hardships, Zhou Yun had already become the supreme existence through having countless epiphanies.

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Karl always wanted to be a Mage. He was born in the Serion Kingdom, a fully pledged magic Kingdom. Seems like a perfect match, right? Unfortunately, no. He's just a commoner, working endlessly to maintaining the lifestyle of Mages. On his 15th birthday, his last chance to escape from a miserable life was destroyed when he was deemed to have no magic potential. For thousands of Serion's citizens that would be the end of their dreams. But how could this story be any fun, ending like that? Follow Karl and his friends while they tried to fight against the Kingdom's oppression. Will the system bend them to submission or will they break the chains of destiny? Spoiler alert: After thousands of years, an ancient Magic system will be reborn in the small Caiset village. What should you expect? - Kingdom Building: For sure! The heavy lifting will come later, I promise! Foundation is important, please be patient; - Epic battles: A Kingdom is not built without war and conflict. Who doesn't like good fights? Let's bring some excitement to this novel!; - Multiple leading characters: Karl convinced them to get on the bus, but this is a very long trip and everyone will need to drive a little; - Scientific Magic System: Especially Alchemy! I'm in no way trying to take the fantasy out of Magic. I just feel like trying to do something more logical; - World Building: I’m using some basic concepts from traditional Fantasy Worlds and trying to add some nice touches to make it unique; - Fun?: I'll try to insert some humor into the story, but that’s an experience we will go through together. Check out my spin-off novels, Merchant Queen and Harbinger of Death. Both are independent but share the same world and can give additional info on worldbuilding and hidden plots. Don't forget to check the comments section for images (Magic tools, Inventory, ...)