Tobiseiji Hanaike: A National Treasure Where Iron Spots Dance Like Butterflies on Jade-Green Glaze
Hidden in plain sight on Osaka's elegant Nakanoshima island, a single porcelain vase has captivated tea masters, merchants, and emperors for more than seven centuries. Standing just 27.3 centimeters tall, the Tobiseiji Hanaike — literally the "Flying Celadon Flower Vase" — is widely regarded as the finest surviving example of its kind in the world. Designated a National Treasure of Japan in 1952, this Yuan dynasty masterpiece is one of only two National Treasures held by the Museum of Oriental Ceramics, Osaka (MOCO), and it offers international visitors a rare opportunity to encounter the very pinnacle of Chinese celadon craftsmanship on Japanese soil.
What Is Tobiseiji? Understanding the "Flying Celadon"
The Japanese term tobiseiji (飛青磁), meaning "flying celadon," describes a distinctive style of Chinese porcelain in which dark iron-oxide spots are scattered across a translucent blue-green celadon glaze. When fired in the kiln, the iron-rich pigment bleeds slightly into the surrounding glaze, creating spots that seem to flutter and float — much like butterflies caught mid-flight or petals drifting on a still pond.
A Treasured Tea Utensil for Generations
Such pieces were produced primarily at the famed Longquan kilns of Zhejiang Province in southeastern China, a center of celadon production whose wares were exported across East Asia, Southeast Asia, and as far as the Middle East. In Japan, where the aesthetic sensibilities of the tea ceremony placed enormous value on imported Chinese ceramics known as karamono, tobiseiji pieces were treasured as some of the most refined vessels a tea master could possess.
The Yuhuchun Form
The Tobiseiji Hanaike takes the elegant yuhuchun (玉壺春) form — a vase shape that became fashionable during the Yuan dynasty (1271–1368). Characterized by a generously rounded body that tapers gracefully into a slender neck before opening into a small, slightly flared mouth, the silhouette is often described as approaching the golden ratio in its proportions. The visual contrast between the full belly and the narrowed neck creates a sense of tension and balance that has been admired by collectors for centuries.
Why Was This Vase Designated a National Treasure?
The Tobiseiji Hanaike was first registered as an Important Cultural Property in July 1941, before being elevated to National Treasure status on March 29, 1952. The decision rested on three principal factors that, taken together, place this vase in a category of its own.
1. Unparalleled Quality of Form and Glaze
The vase displays a body of dense greyish-white porcelain stoneware covered in a thick, lustrous celadon glaze of an exquisite blue-green hue. Specialists classify the glaze color as belonging to the so-called Tenryūji-de group — a category slightly warmer in tone than the cool, powder-blue Kinuta celadons of the earlier Southern Song period. The glaze pools beautifully along the contours of the vase, accentuating its silhouette with depth and luminosity.
2. The Masterful Placement of Iron Spots
Twenty-one iron-oxide spots have been carefully arranged across the surface: thirteen on the body, five around the mouth rim, and three on the foot. Their irregular shapes and varying tones — ranging from deep brownish-black to softer reddish-brown — give the piece a sense of organic, almost calligraphic spontaneity. Far from being random, the placement reveals a sophisticated understanding of how decoration interacts with form.
3. A Distinguished Lineage in Japan
The vase has been treasured in Japan for many centuries, having been imported from China during the medieval period. From the Edo period onward it belonged to the Konoike family, one of Osaka's most powerful merchant houses. A 1791 Konoike household inventory records a piece described simply as "tobiseiji" — believed to be this very vase. After passing through subsequent collections, it became the first National Treasure to enter the celebrated Ataka Collection in the postwar era.
Highlights and Points to Appreciate
The Dance of Iron Spots
Approach the vase slowly and let your eyes follow the iron spots as they curve around the body. No two spots are identical in shape or shade. Some appear sharp and concentrated, while others have softened into clouds of brown that bleed gently into the surrounding glaze. The Japanese have long likened them to butterflies in flight — a poetic image that captures both their rhythm and their delicate irregularity.
The Silhouette in Profile
Step to the side of the display case and view the vase in profile. The full curve of the body, the elegant taper of the neck, and the small flared mouth combine to produce a silhouette that is at once stately and intimate. The high, carefully finished foot ring adds a sense of poised lightness, as though the vase were floating just above its base.
The Light Itself
The Museum of Oriental Ceramics is renowned for its world-first natural-light display rooms, where ceramics can be viewed under conditions remarkably close to those in which they would originally have been admired. Following its 2024 renovation, the museum also installed new LED lighting designed to closely approximate natural daylight, allowing the green-blue glaze of the Tobiseiji Hanaike to reveal subtle shifts in tone throughout the day.
The Companion National Treasure
While visiting, do not miss the museum's other National Treasure, the Yuteki Tenmoku Tea Bowl — a Southern Song dynasty tea bowl whose silver-and-blue oil-spot glaze is considered the finest of its kind in the world. Together, the two pieces form an extraordinary pair representing the highest achievements of Chinese ceramics treasured in Japan.
Around the Museum: Exploring Nakanoshima
The museum sits in the heart of Nakanoshima, a long, narrow island in the Ōkawa River that forms one of central Osaka's most refined cultural districts. After your visit, you will find a wealth of attractions within easy walking distance.
- Osaka City Central Public Hall (Osaka Shi Chūō Kōkaidō): A stunning red-brick neo-Renaissance building completed in 1918, located immediately west of the museum. The hall is itself an Important Cultural Property of Japan.
- Nakanoshima Park: A green riverside park stretching the length of the island, with seasonal rose gardens and shaded paths along the water.
- Nakanoshima Library: A neoclassical 1904 building with a striking domed reading room.
- Osaka Science Museum and National Museum of Art, Osaka: Located on the western half of Nakanoshima, about a 15-minute walk from MOCO.
- Kitahama and Yodoyabashi: Charming neighborhoods with retro coffee houses, riverside cafés, and historic financial-district architecture.
Visitor Information
The Tobiseiji Hanaike is part of the museum's permanent collection but, to protect such a fragile masterpiece, may not always be on display. Visitors hoping to see it in person are strongly encouraged to check the museum's official website before traveling, as exhibition rotations and special exhibitions can affect what is shown on any given day.
- 📍 Plan Your Visit to Osaka
- Find tours, activities & transport passes near Flying Celadon Flower Vase
- [ USJ Tickets Osaka Castle & Dotonbori Food Tours ]
Q&A
- Is the Tobiseiji Hanaike always on display?
- Not always. As one of the museum's most precious works, the vase appears periodically as part of the rotating permanent collection or in special exhibitions. Please check the official Museum of Oriental Ceramics website or contact the museum in advance to confirm whether it is currently on view.
- Where exactly was this vase made?
- It is believed to have been produced at the Longquan kilns in Zhejiang Province, southeastern China, during the Yuan dynasty (14th century). The Longquan kilns were one of the most prolific centers of celadon production in Chinese history.
- How did this Chinese vase come to be a Japanese National Treasure?
- Although designated cultural properties of Japan are normally objects made in Japan, the system also recognizes important works of foreign origin that have been treasured in Japan for centuries. This vase was brought to Japan during the medieval period and has been carefully transmitted through generations of Japanese owners — most notably the Konoike merchant family of Osaka and the Ataka Collection — making it part of Japan's cultural heritage.
- What does "yuhuchun" mean?
- Yuhuchun (玉壺春) is the name given to a particular vase shape that became popular in China during the Yuan dynasty. Characterized by a rounded lower body, a tapering neck, and a small flared mouth, it was originally used as a wine vessel but was later prized as a flower vase in Japanese tea culture.
- Are photographs allowed inside the museum?
- Photography rules vary by exhibition and by individual artwork. Some works permit non-flash photography for personal use, while others — particularly loaned items and certain National Treasures — may not be photographed. Please check the signage in each gallery and ask a member of staff if you are unsure.
Basic Information
| Designated Name | Tobiseiji Hanaike (Flying Celadon Flower Vase) |
|---|---|
| Classification | National Treasure (Craft, Ceramics) |
| Country / Period | China, Yuan dynasty (14th century); some sources note Southern Song–Yuan |
| Kiln | Longquan kilns, Zhejiang Province |
| Dimensions | Height 27.3 cm; body diameter 14.5 cm |
| Material | Porcelain stoneware with celadon glaze and iron-spot decoration |
| Designation Dates | Important Cultural Property: July 3, 1941; National Treasure: March 29, 1952 |
| Provenance | Konoike family (Edo period) → Ataka Collection → donated by 21 Sumitomo Group companies to Osaka City |
| Location | Museum of Oriental Ceramics, Osaka (MOCO), 1-1-26 Nakanoshima, Kita-ku, Osaka 530-0005 |
| Owner | City of Osaka |
| Opening Hours | 9:30–17:00 (last admission 16:30) |
| Closed | Mondays (next day if Monday is a public holiday), New Year holidays, exhibition changeover periods |
| Access | Immediately outside Exit 1 of Naniwabashi Station (Keihan Nakanoshima Line); approximately 400 m from Yodoyabashi or Kitahama Stations |
References
- 飛青磁花生 とびせいじはないけ - 文化遺産オンライン
- https://bunka.nii.ac.jp/db/heritages/detail/159265
- 大阪市立東洋陶磁美術館 公式ウェブサイト
- https://www.moco.or.jp/
- 新着情報 - 国宝 飛青磁花生 | 大阪市立東洋陶磁美術館
- https://www.moco.or.jp/whatsnew/newarrival/3484/
- 友の会通信 149号 | 大阪市立東洋陶磁美術館
- https://www.moco.or.jp/journal/149/
- 国宝-工芸｜飛青磁花生［大阪市立東洋陶磁美術館］ | WANDER 国宝
- https://wanderkokuho.com/201-00339/
- 大阪市立東洋陶磁美術館 | OSAKA-INFO
- https://osaka-info.jp/spot/museum-oriental-ceramics-osaka/
Last verified: 2026.05.06