The information here comes from a post made by the official account on Hoyolab made on 31 July 2024.

Among the Xianzhou ships, the Xianzhou Zhuming excels in artisanship and is renowned as the “Starforge.” What? Trailblazers aren't familiar with the rich history of the Xianzhou Zhuming still?

Well then, let Pom-Pom impart some information about the Xianzhou Zhuming to the Trailblazers.

The “Starforge” is the most skilled in craftsmanship among the Xianzhou ships.^[1]

For those eager to learn the art of forging, the Zhuming is a prestigious academy of craftsmanship. Countless outworlders from across the stellar sea come here to study the craft, most returning home with honored knowledge.

The craftsmanship of the Xianzhou Zhuming can be glimpsed from the starskiff harbor, Radiant Zenith. The structural framework of the buildings is seamlessly embedded in the harbor, as if grown from natural metal meridians. About sixty to seventy percent of weapons needed for all Xianzhou ships are crafted by the Zhuming Artisanship Commission, transported from the Radiant Zenith harbor to various destinations.

The Flamewheel Forge is the foundation of the Zhuming Artisanship Commission, with a poem in its main hall: “Forges wrought a million stars bright, iron craft heroes' soaring flight. Minuscule lights into martial might made, only with sharp blades are peace and plenty saved.”
According to rumors, the progenitor of heliobus, “Flint Emperor,” is here, emitting a brilliance as vigorous as a fixed star.

Huaiyan: The gateway of the Xianzhou Zhuming is open to peaceful visitors. We welcome scholars from all over the universe for learning and exchange.

Strong and Righteous is Huaiyan — The Flaming Heart

Huaiyan is not only the General of Reignbow, but also the Furnace Master of the Artisanship Commission. Beyond military duties, he excels in countless crafts.
It is said that amid the brutal war, Huaiyan, born a craftsman, set aside his hammer and joined the military, experiencing countless life-and-death battles.

As the longest-living person on the Xianzhou, few know the exact age of Huaiyan. There are countless individuals who have studied under Huaiyan to learn craftsmanship and swordsmanship.

Yunli: The Xianzhou Zhuming's forging skills are renowned across the stellar sea, with many great craftsmen emerging, most of whom are disciples of my grandfather.

The Future of the Xianzhou Zhuming

Those at the pinnacle of the Xianzhou Zhuming's swordplay and craftsmanship are known as the Flamewheel Octet, all from the Cloud Knights of Zhuming and the Artisanship Commission, studying under Huaiyan in craftsmanship and swordplay.^[2] Yunli, who arrived at the Luofu alongside Huaiyan, is the second youngest prodigious swordmaster among the Flamewheel Octet.

Yunli: Don't mention it. Grandpa said fame only invites challenges and disputes. Swordmasters of Zhuming take pride in the entire army's victories, not just petty personal triumphs.
As for my sword Old Mettle? Although it's still an unfinished blade, it and I are good companions capable of understanding each other's will.