THE KOREAN TODAY
History Lives On
The Baekje Chronicle
Episode 17: A Letter That Crossed the Sea – Baekje’s Diplomacy with Southern China
A single sheet of paper outweighed a border. On it rode the fate of a kingdom, sailing across a sea.
In the first month of 372 CE, a Baekje embassy crossed the Yellow Sea and landed at Jiankang (today’s Nanjing), capital of China’s Eastern Jin dynasty. Their mission: deliver a state letter and formally open diplomatic relations. With the powerful kingdom of Goguryeo pressing from the north, securing an ally across the sea was not diplomacy for its own sake – it was survival strategy.
Today we call this kind of maneuvering between great powers “balanced diplomacy.” More than 1,600 years ago, Baekje was already playing that game. Why did Baekje, from its most powerful king to its final years, keep turning south toward China for over two centuries?
🌍 Western Historical Parallel
While Baekje courted the Southern Dynasties across the Yellow Sea, the Western Roman Empire had already collapsed (476 CE), and Byzantium under Justinian (r. 527-565) was reconquering the Mediterranean – a smaller kingdom leveraging a distant, cultured empire while facing pressure from aggressive neighbors, much like Baekje’s own position between Goguryeo and the Chinese south.
◆ The Ancient Landscape
From the 4th century onward, China was split between a fragmented north ruled by successive non-Han dynasties, and a southern line of courts – Eastern Jin (317-420), then the Liu Song, Southern Qi, Liang, and Chen dynasties – collectively remembered as the Southern Dynasties. Baekje maintained near-continuous contact with this southern line for over two centuries.
It began in the first month of 372 CE, when King Geunchogo sent Baekje’s first embassy to Eastern Jin. That June, the Jin court granted him the title “General Who Guards the East, concurrently Governor of Lelang.” Twelve years later, in 384, under King Chimnyu, the Indian monk Marananta arrived from Eastern Jin and introduced Buddhism to Baekje – the first official transmission of Buddhism on the Korean peninsula. Relations deepened through the Liu Song and Southern Qi, peaked under the Liang dynasty, and after Liang’s collapse in 557 shifted into an equidistant policy of paying tribute to both Southern Chen and Northern Qi at once.
“In the spring, first month, [the king] sent an envoy who entered Jin to pay tribute.”
◆ Same Era, Different Worlds
🏛️ Southern China
After Eastern Jin fell in 420, the Liu Song, Southern Qi, Liang, and Chen courts held the south; the Liang court under Emperor Wu (502-549) marked the cultural high point.
🗿 Byzantine Empire
Emperor Justinian (r. 527-565) pursued reconquest of Italy and North Africa while codifying Roman law.
⚔️ Western Europe
The Western Roman Empire had fallen (476), and Frankish and Ostrogothic kingdoms were carving up its former territory.
🌏 Japanese Archipelago
The “Five Kings of Wa” likewise sent repeated embassies to Liu Song throughout the 5th century, seeking titles – playing the very same investiture game as Baekje.
[Image: Baekje-Southern Dynasties maritime route, 4th-6th centuries CE]
⚔️ Scene from That Day
“541 CE, the harbor at Sabi. King Seong himself sees off the departing envoys. Silk and tribute goods fill the hold; against the envoy’s chest rests a carefully written petition: ‘Send us a scholar to teach the Book of Odes, monks who can expound the Nirvana Sutra, and craftsmen to carve the Buddha’s image.'”
“As the sail rose and the ship cut into the swell, the king already knew: what returned on that ship would not be silk, but the knowledge that would reshape his kingdom’s next century.”
◆ Uncovering Historical Truth
Southern diplomacy peaked under King Muryeong (r. 501-523). The proof surfaced in 1971 at Songsan-ri in Gongju: an undisturbed royal tomb, never looted. Its brick-vaulted chamber followed a Liang-dynasty burial style entirely unlike traditional Baekje tombs – as if a piece of Nanjing had been transplanted onto Korean soil. The memorial stone inside recorded that Muryeong had received from the Liang court the title “Grand General Who Pacifies the East,” and even specified the exact sexagenary-cycle dates of his death (523 CE) and burial (525 CE).
Around the same period, the Liang prince Xiao Yi (later Emperor Yuan), while serving as governor of Jingzhou, commissioned a scroll depicting foreign envoys who came to pay tribute – the “Portraits of Periodical Offering.” It includes a portrait and brief description of the Baekje envoy, one of the only surviving visual records of a Three Kingdoms-era Korean figure.
King Seong (r. 523-554) went further still. In 541, he sent envoys to Liang requesting a scholar of the Book of Odes, commentaries on Buddhist scriptures including the Nirvana Sutra, and craftsmen and painters – all of which Liang provided. Baekje did not simply absorb what it received; it refined this knowledge and re-transmitted it onward to Silla, Gaya, and across the sea to Wa (Japan). Baekje functioned as a cultural relay station for East Asia – digesting what it imported, then re-exporting it as its own.
Period
4th-6th century CE
Key Figures
Kings Geunchogo, Muryeong, Seong
Key Event
Investiture diplomacy with the Southern Dynasties
Legacy
Relay hub for Buddhism and culture across East Asia
🔍 International Academic Perspectives
Mainstream View
The Chinese histories Book of Song and Book of Liang claim Baekje once held territory in Liaoxi (western Liaoning) on the Chinese mainland. Many historians, following the skeptical 19th-century scholar Han Jin-seo, consider this geographically implausible and likely a scribal or diplomatic-record error.
Alternative View
Others argue the claim appears independently in multiple official Chinese histories and should not be dismissed outright (following 18th-century scholar Sin Gyeong-jun). South Korea’s own 2009 curriculum guidelines still instruct textbooks to note that “interpretation remains contested.”
📖 Key Terms Explained
- Baekje (백제)
- Ancient Korean kingdom (traditionally 18 BCE – 660 CE), one of the Three Kingdoms of Korea, located in the southwest of the peninsula.
- Southern Dynasties (南朝)
- A succession of Chinese courts based in the south (Jiankang/Nanjing) – Eastern Jin, Liu Song, Southern Qi, Liang, and Chen – roughly contemporary with the Byzantine Empire’s early centuries.
- Investiture (책봉)
- A diplomatic system in which a Chinese emperor formally granted titles to foreign rulers, symbolically affirming their legitimacy in exchange for tribute and nominal deference.
◆ Lessons for Today’s World
The survival strategy of a state wedged between great powers has not changed as much as we might think. Baekje built a sea-bridge to the Southern Dynasties to counterbalance Goguryeo’s pressure, and when Liang fell, it pivoted immediately to paying tribute to both Chen and Northern Qi at once – a pragmatic refusal to bet everything on a single patron.
Just as striking is the cultural trajectory: Baekje began as an importer and became an exporter, absorbing Buddhism and scholarship from the south and transmitting them onward to Wa. It is not so different, in essence, from how Korean culture radiates outward across the globe today.
| Aspect | Baekje Era | Modern Parallel |
|---|---|---|
| Geopolitics | Allying with the distant south to counter a hostile northern neighbor | Balanced diplomacy among rival great powers |
| Military/Diplomacy | Simultaneous tribute to Chen and Northern Qi after Liang’s fall | Diversified alliances avoiding over-reliance on one bloc |
| Culture | Importing then re-exporting Buddhism and scholarship to Wa and Gaya | Global spread of K-culture |
[Image: The transmission route of culture from the Southern Dynasties through Baekje to Wa]
📚 Diving Deeper
- The Tomb of King Muryeong was discovered by accident in 1971 during drainage work – the only unlooted royal tomb of the Three Kingdoms period, comparable in significance to Britain’s Sutton Hoo ship burial.
- The original “Portraits of Periodical Offering” scroll is lost; the Baekje envoy’s likeness survives only through later copies.
- The ruins of Sabi, Baekje’s last capital near modern Buyeo, still show traces of Southern Dynasties architectural and roof-tile techniques.
The Voice of Living History
For Baekje, the sea was never a border – it was a bridge. Across it flowed documents and people, scriptures and craft, and through that flow Baekje built itself into a hub of East Asian civilization.
“To receive without simply swallowing, and to reshape before passing it on – that is the oldest diplomatic wisdom Baekje left behind.”
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Episode 16: Baekje’s Science and Technology – Astronomy and Medicine
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Episode 18: Baekje and Wa – Brother Kingdoms
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