You Jiajun
游佳俊

About You Jiajun

You Jiajun (游佳俊) is a contemporary Jian ware maker working in
Jianyang District, Nanping, Fujian, the modern center of Jian Zhan production.
His work has attracted collector attention particularly for dramatic pieces associated with
side firing, known in Chinese as
侧烧 (cèshāo).

Unlike a conventionally positioned bowl, where glaze movement generally follows the vessel vertically
toward the foot, side-fired pieces are oriented differently during firing. This changes how molten glaze,
ash and other kiln effects travel across the surface. The resulting patterns can become strongly directional,
with long flowing bands, pooled areas, irregular color fields and dramatic concentrations toward one side.

Public biographical information about You Jiajun remains limited. Rather than assigning undocumented
titles, teachers or awards to him, this profile focuses on the information that can presently be connected
to him through Jianyang business records, marked work, contemporary video documentation and pieces
circulating among collectors.

Studio & Jianyang Record

Chinese business records identify 游佳俊 as the legal representative
of:

The individual business was registered on October 24, 2023.
Its listed address is in Tongyou, Jianyang District, Nanping, Fujian.
The registered business activities include arts and collectibles, tea ware, internet sales and
individual livestreaming services.

A separate Chinese business directory also indexes
南平市建阳区游佳俊茶盏工作室,
or approximately Jianyang District You Jiajun Tea Bowl Studio,
using the same October 24, 2023 registration date and the same Tongyou address.

Side Firing · 侧烧

The most distinctive work currently associated with You Jiajun uses
侧烧, literally “side firing.”
Instead of presenting the bowl to the kiln only in its normal upright orientation, the firing arrangement
allows gravity and kiln atmosphere to act across the vessel from a different direction.

As the glaze reaches high temperature and becomes fluid, gravity can draw material laterally across the
wall of the vessel. The movement may produce sweeping lines, elongated streaks, pooled glaze and a clear
directional “flow” that looks very different from a more symmetrical upright-fired Jian bowl.

A Side-Fired Bowl in Detail

A Chinese ceramics video provides one of the clearest visual records of this firing style.
Its caption reads:

The screenshots below are especially useful because they show the foot and exterior while the vessel is
turned in the hand. The glaze is concentrated toward one side, while a broad section of the lower body
remains exposed. The visual direction of the glaze makes the side-firing concept much easier to understand
than a finished interior photograph alone.

Video screenshots: 小赖瓷游记.

Mark & Name

The photographed bowl carries a small impressed mark in the center of the foot.
The two-character impression appears consistent with
佳俊, the given name
Jiajun.

An interesting spelling difference appears in the available material. Chinese business records use
游佳俊, while the social-media video caption visible above writes
游家俊.
Because the Jianyang business records specifically identify 游佳俊 and the foot impression appears
consistent with 佳俊, Fifty Shades of Clay uses
游佳俊 as the primary spelling on this profile.

Glaze Movement & Color

The side-fired pieces associated with You Jiajun can be visually extravagant.
Rather than presenting a single repeating hare’s-fur or oil-drop pattern, many examples develop broad
areas of contrasting color and texture.

Observed examples include combinations of
cobalt and electric blue, turquoise, olive green, gold, bronze,
coral-red, pink, violet and near-black.
These colors appear in rivers, feathered bands, pooled fields and irregular cellular textures.
Lighting can also dramatically alter their appearance, particularly on highly iridescent surfaces.

The result can look almost landscape-like. A single bowl may move from dark metallic areas into brilliant
blue and then into warm gold or coral, with the pattern visibly following the direction of glaze movement.

The “Side-Drip” Feature

Collectors may notice a small projecting or pointed area on some of these vessels.
At first glance it can resemble a tiny pouring spout.

In the side-fired examples, however, this feature is closely associated with the directional character
of the firing and glaze. Molten material can move toward a low point and create a pronounced drip,
pooled edge or nose-like projection. This is one reason the pieces are sometimes informally described
by collectors as “side-drip cups.”

The exact form varies considerably from vessel to vessel. Some examples have a subtle point at the rim,
while others develop a much more obvious projection.

Examples of You Jiajun’s Work

The following examples were photographed during sales hosted by
Anna.
The numbered stickers correspond to individual pieces offered during the live-sale selection.
Click any photograph to visit Anna’s host profile.

Identifying the Work

No single glaze color should be used to identify a You Jiajun piece. The experimental nature of this work
means that finished surfaces can vary dramatically.

More useful identifying features include the combination of:

• strong directional glaze movement;
• side-fired or ash-fall presentation;
• multicolored and often iridescent surfaces;
• pronounced glaze pooling or drip development on one side;
• exposed clay areas created by the firing and glazing arrangement;
• and, where present, a foot mark consistent with 佳俊.

As with all contemporary Jian ware, attribution should ideally be supported by the mark,
certificate, original packaging or documented seller provenance rather than glaze appearance alone.

“Master You” in Collector Sales

You Jiajun’s work has also circulated internationally under the abbreviated seller identification
“Master You.”

A ChinaVeins sales archive dated January 23, 2026
preserves a large group offered as “Master you”,
with numbered selections extending through piece 59.
Several of the numbered photographs shown on this page come from pieces presented through
Anna.

Because the archived ChinaVeins product page itself uses only the abbreviated “Master You” name,
Fifty Shades of Clay treats the seller archive as supporting provenance for the photographed group
rather than as the sole source for the artist’s full Chinese identity.

Research Notes

At present, reliable public information has not been located establishing You Jiajun’s birth year,
formal teacher or lineage, government-recognized inheritor status, professional rank, major awards
or patent history.

Those details have therefore not been added to this profile. If additional certificates,
studio publications, interviews or official records become available, this page can be expanded.

Sources & Documentation

• 
  Zhaopin business record
  
  – 南平市建阳区盏之大器建盏陶瓷工作室; legal representative 游佳俊; established October 24, 2023.
• 
  Jianyang ceramics business directory
  
  – listing for 南平市建阳区游佳俊茶盏工作室.
• 
  ChinaVeins · January 23, 2026 · “Master You”
  
  – archived numbered group of works.
• Video documentation from 小赖瓷游记,
  including the caption “游家俊建盏落灰侧烧七彩顺势” and views of the impressed foot mark.
• Numbered sales photographs courtesy of
  
  Anna
  .