Let me ask you a question:
Seventy years after Columbus “discovered” the New World, could ordinary Ming citizens legally sail overseas for business?
The answer is no. Not only no — doing it without permission could get your head cut off.
But there was one exception.
Just one.
In 1573, the Ming Empire quietly opened a door in Haicheng County, Zhangzhou. It wasn’t a big door. But where it led was Luzon, Manila, Mexico — the entire world.
That door was called Yuegang — Moon Harbor.
I. One County, Half a Global Trade History
- The year the Wanli Emperor ascended the throne. That same year, Prefect Luo Qingxiao of Zhangzhou compiled the Zhangzhou Prefecture Chronicle.
This 32-volume work covers a lot of ground — territory, taxes, military defense, local customs. But if you read between the lines, it’s telling a bigger story:
The Ming Empire was transitioning from “closed seas” to “open seas.”
This was not an easy decision. For the first 200 years of the Ming dynasty, maritime trade was illegal. But Yuegang was special — it wasn’t under the government’s nose. It was hidden in a winding harbor at the mouth of the Jiulong River.
Private merchants had already found it.
The government eventually figured something out: blocking the flow was harder than channeling it.
So Haicheng County was born.
II. How Did Haicheng Come to Be?
1566: Local officials first proposed establishing a county at Yuegang.
1567: The Longqing Emperor issued the edict to open the seas. Yuegang officially became the Ming Empire’s only legal port for private maritime trade.
1573: Haicheng County was formally established. The 1st, 2nd, and 3rd Districts of Longxi County, plus the 28th District of Zhangpu County — pieced together to form this new county.
According to the Geography records, Haicheng’s county seat was located 50 li southeast of the prefectural capital, right at the mouth of the Jiulong River. In the words of the time: “Outward connected to foreign islands; inward shielding the prefectural cities.”
In plain English: it connected to overseas kingdoms on one side, and protected Zhangzhou on the other.
This wasn’t an ordinary county. It was a county born for trade.
Where there’s trade, there are pirates. The government set up multiple inspection posts across the county, with the Zhenhai Guard permanently stationed nearby — a defense network of 31 land and water checkpoints.
Yuegang was business on one end, and guns on the other.
III. From Zhangzhou to Manila, and Then to Mexico
Open the map in the Wanli Zhangzhou Chronicle, and you’ll see a clear route:
Zhangzhou → Yuegang → Jiulong River mouth → Out to sea.
Then where?
Two routes south: to Luzon (Manila), Patani, Siam (Thailand), and Jiaozhi (Vietnam). One route east: to Nagasaki (Japan).
From Manila, east again — across the Pacific — to Mexico.
I’m not making this up. It’s right there in black and white in the historical records.
Yuegang’s merchant ships left Zhangzhou, reached Manila, then the cargo was loaded onto Spanish galleons, crossed the Pacific, and arrived at Acapulco, Mexico. From there, it spread across the entire Americas.
The silk on your back, the porcelain you use, the tea you drink — some of it might have gone through Yuegang.
And every item that left Yuegang had to pay a fee.
That fee was called “Xiang-Yin” — provision silver.
IV. 88 Ships and One County’s Fiscal Code
After the Longqing maritime opening, Yuegang’s annual quota was 88 ships.
88 ships. Doesn’t sound like much. But consider this: in the entire Ming Empire, only these 88 were legal.
Every one of those 88 ships paid a “ship tax” and “provision silver.”
How much? The Tax and Corvee volume kept the books: when Haicheng County was first established, its commercial tax quota couldn’t match Suzhou or Hangzhou. But within a few decades, its provision silver revenue accounted for one-third of Zhangzhou Prefecture’s total income.
A brand new county, one port, one-third of the entire prefecture’s money.
Zhangzhou’s goods flowed to the world through this channel. The Products volume of the Wanli chronicle lists a long catalog: raw silk, satin, refined sugar, porcelain.
Four centuries later, Zhangzhou’s export list changed — canned goods and light industrial products replaced porcelain. But the “export-oriented” DNA was already encoded here in the 1570s.
V. What Happened When the Money Flowed Back?
Trade isn’t just about goods.
It changes people.
In 1583, the gentry of Haicheng began reinvesting trade profits into education. Building academies, funding schools.
I paused when I saw this number: Haicheng’s registered artisan and merchant populations increased by about 15% after the mid-Ming.
15%. That means an entire generation’s occupational structure was rewritten. Fewer people farming, more people making and trading. Many of them would later head to Southeast Asia.
Then there’s religion. After 1511, as maritime risks grew, temples to Mazu (the Sea Goddess) and Guandi (the God of War) multiplied rapidly across Haicheng. More people sailing meant more people praying.
The Wanli chronicle records 12 restored ancestral halls and academy inscriptions from Haicheng. One phrase appears again and again:
“Migrated to Luzon.”
Those three words are the original road signs for overseas Chinese searching for their roots today.
VI. The 1980s: Yuegang “Comes Back to Life”
In the 1980s, Zhangzhou was re-designated as an open city.
The Zhangzhou Transportation Chronicle has a telling data point: the port’s annual throughput took off after reform and opening. If Yuegang was version 1.0, today’s Zhangzhou Port throughput is version 2.0 — a digital revival.
During the Ming, Haicheng exported over 50 categories of goods. Today, Zhangzhou exports even more. But the essence hasn’t changed.
Yuegang isn’t a dead historical term. Its DNA is still alive.
Final Thought
Yuegang in the Wanli Zhangzhou Chronicle is more than yellowed pages.
It’s a set of numbers: 88 ships, one-third of fiscal revenue, 50+ export categories.
It’s a route: from Zhangzhou to Manila, then Mexico.
And it’s a group of people: the Zhangzhou folks who carved “migrated to Luzon” into stone steles — their descendants could be anywhere in the world today.
The story of Yuegang is really a story about opening a door.
The door opened. Goods went out. People went out. Money came back. Ancestral halls were rebuilt. Academies were founded.
Four hundred years later, when we open the Wanli Zhangzhou Chronicle again, those dense columns of numbers and place names aren’t dead history.
They’re living signposts — pointing to where we came from.