Hinduism FIDL in 975 BC. Whew, so many religions....
As the Oracle neared completion in Kyoto, I noticed that my research on Code of Laws would finish at approximately the same time. I considered trying a CS slingshot, but then decided against it. I haven't played enough to know when the Oracle usually gets built on Noble, so I didn't want to delay it. (In fact, I had a few Workers chopping some trees to speed the process.) I still needed Mathematics in addition to Code of Laws. Given how quickly wonders were falling, I didn't want to risk the Oracle.
Advice requested: Should I have tried for the slingshot?
Anyway, Kyoto finished the Oracle in 925 BC. The spirits of our ancestors appeared in the form of a master blacksmith to taught the Korean people how to work with metal even more efficiently than before. (Metal Casting from the Oracle.)
And in 875 BC, Korean scholars codified the rules of society into a Code of Laws. While their intent was to provide a better system of managing the government, a venerable sage named Confucius took it upon himself to transcribe these laws and adopt them into a personal code of ethics. This new way of life -- called Confucianism -- began to spread among the citizens of Kyoto....
I noticed that Genghis and Qin hadn't adopted a state religion yet, so I switched to Confucianism. If the faith spreads to them, I'll get some diplomacy credit. Anyway, the Korean citizens were starting to grumble, and a state religion would appease them for the moment. Sury became Annoyed with me, but my power rating was higher than his.
Somewhere along the way, I noticed the my power rating was only
0.7 when compared to the Mongols. Yike!
Kyoto cranked out another Settler in 725 BC. He took an Axeman escort and headed south toward the Wines-Marble-Corn spot near the center of the continent.
The two scientists in Seoul spawned a Great Scientist in 675 BC, who promptly built an Academy. I considered putting the scientists back to work in the cottages, but I decided to go for another Great Scientist to settle in Seoul.
The Settler reached his destination and founded Wonsan in 650 BC. Another production city....
In 625 BC, a Persian Workboat sailed into Korean waters. Hi, Cyrus! Why don't I even get Darius as the Persian leader? Ah well, Cyrus is probably less annoying.
In 525 BC, the mighty arrogant Khan demanded that Korea provide him with some Crabs. (Stop snickering, you!) With an eye on that baleful red power score, I agreed. However, I drew the line at also providing Khan with butter for the Crabs. A man has to keep his dignity! Clearly, Korea would need to consider preemptive defense against the Mongols at some point ... but I already knew that.
Some time ago, Korean researchers were instructed to beeline Construction. (I'd like Hwachas please, with a side order of Chinese pain.) But first, we need to learn some basic math! In 500 BC, a suspicious Muppet with a strong accent taught the Korean people to count. Unfortunately, he also taught them to laugh whenever they were finished counting, which made the Mathematics lessons really annoying. Annoying or not, they were effective, and the Korean researchers were able to start working on Construction right away.
The first Barbarian galleys appeared in 395 BC, trashing Kyoto's fishing nets and sinking my scouting Workboat. Must. Build. Triremes.
In 320 BC, Korean scientists figured out how to build stuff. Stuff like -- Hwachas! Fear me, Qin! Next research goal was Alphabet for tech trading.
Seoul finished the Moai Statues in 200 BC and started building a Trireme. Kyoto and P'yongyang were already building Triremes. Leave my fishing nets alone, stupid Barbarians!
Korean researchers developed an Alphabet in 140 BC. I traded around and picked up Archery, Animal Husbandry, and Iron Working. Korean scouts reported that there were no Horses on the home continent. Um, dang.

That's okay, though, because Macemen + Hwachas will do just fine.
In 35 BC, Korean scholars discovered how to pass the Throne from father to son. Since I'm immortal, I don't really expect to need an heir. However, this knowledge is still useful, because I can now order my troops to keep the peasants in line!
Qin offered Calendar for Code of Laws in 25 AD. I accepted. Korea has some Calendar resources, so we might as well unlock them. Besides, Qin doesn't seem to be expanding much, so Courthouses won't help him.
Seoul built a Confucian Monastery in 70 AD and began training missionaries. Must spread the faith!
In 160 AD, the Chinese ambassador relayed a message to Wang Kon. Qin was requesting that Korea share their ancestral knowledge of Metal Casting! Rather than dishonor the spirits of the Oracle, Wang Kon refused the request. Let him build his
own Oracle! By sheer coincidence, P'yongyang started to build the first Hwacha that same year.
In 190 AD, I officially panicked about my low power rating, especially with respect to Mongolia. Every city in Korea trained an Archer to bolster the homeland defense.
In 235 AD, Korean scholars built on the foundation of our Code of Laws to develop a system of professional Civil Service. Korea instantly switched to a Bureaucracy, and heavily-cottaged Seoul (with an Academy!) became a serious science powerhouse. Also Civil Service is one-half of Macemen.

Next research target: Machinery!
Also in 235 AD, I smacked myself in the head and ordered a Worker to build an overdue Winery in the vineyards near Wonsan.

Wine will make my people like me!
P'yongyang continued building Hwachas. For defense only, mind you!
In 295 AD, a Great Prophet was born in Kyoto. He immediately built the Kong Miao. Go go, shrine economy! Sury asked for Mathematics, and I was only too happy to send the demented Muppet over to annoy him for a while.
Korea started shifting to more military production. Must keep a strong defense!
To emphasize the necessity of a strong defense, Khan came calling again in 415 AD. He wanted 90 gold. The Korean government quickly approved the Crazed Warmongers' Bailout package, and we sent the Khan his money. Now go away and let us focus on the Chinese!
Finally, in 640 AD, Korea had a strong defensive force of Macemen and Hwachas. They marched up the Chinese border and began to conduct defensive maneuvers. Sadly, Chinese scouts misinterpreted these peaceful exercises, and the situation escalated out of control. Before anyone could stop it, Korea and China were at war. Truly, this was a tragedy! However, circumstances forced our hand, and we carried out our duty with reluctant hearts.
Let's go, Defense!
While attacking in Chinese territory at Nanjing, Heavy Footman loses to Chinese Axeman (0.60/5)
While attacking in Chinese territory at Nanjing, Heavy Footman (6.72/8) defeats Chinese Swordsman
While attacking in Chinese territory at Nanjing, Heavy Footman (6.08/8) defeats Chinese Spearman
While attacking in Chinese territory at Nanjing, Heavy Footman (8.00/8) defeats Chinese Axeman
Taoism has spread: Nanjing
Captured Nanjing (Qin Shi Huang)
Nanjing was the Taoist Holy City. Cool!
More preventative defense in 775 AD:
While attacking, Hwacha escapes from Chinese Longbowman
While attacking in Chinese territory at Shanghai, Hwacha loses to Chinese Longbowman (5.04/6)
While attacking in Chinese territory at Shanghai, Heavy Footman (2.56/8) defeats Chinese Longbowman
While attacking in Chinese territory at Shanghai, Heavy Footman (2.00/8) defeats Chinese Axeman
Christianity has spread: Shanghai
Hinduism has spread: Shanghai
Captured Shanghai (Qin Shi Huang)
Qin has Longbowmen. Oh, bother. Well, Macemen still beat Longbowmen, so the defense of Korea must continue!
In 890 AD, Korean theologians finally defined their craft. The Korean government immediately used this knowledge to form a Theocracy that would make our defenders more efficient. Yay, defense!
Speaking of defense, the Korean army closed in on Beijing in about 900 AD. Concerned that the walls would pose a safety hazard to the Korean people, our Hwacha teams started to demolish them. Fifty years later, the walls were down, and our troops applied to doctrine of Preemptive Defense to China's capital:
While attacking in Chinese territory at Beijing, Hwacha loses to Chinese Longbowman (2.88/6)
While attacking in Chinese territory at Beijing, Hwacha loses to Chinese Longbowman (3.12/6)
While attacking in Chinese territory at Beijing, Hwacha loses to Chinese Longbowman (2.22/6)
While attacking in Chinese territory at Beijing, Heavy Footman (3.44/8) defeats Chinese Longbowman
While attacking in Chinese territory at Beijing, Heavy Footman (6.48/8) defeats Chinese Longbowman
While attacking in Chinese territory at Beijing, Heavy Footman loses to Chinese Horseman (0.24/6)
While attacking in Chinese territory at Beijing, Heavy Footman loses to Chinese Axeman (0.05/5)
While attacking in Chinese territory at Beijing, Heavy Footman (5.44/8) defeats Chinese Horseman
While attacking in Chinese territory at Beijing, Heavy Footman (3.92/8) defeats Chinese Longbowman
While attacking in Chinese territory at Beijing, Heavy Footman (8.00/8) defeats Chinese Horseman
While attacking in Chinese territory at Beijing, Heavy Footman (8.00/8) defeats Chinese Axeman
Christianity has spread: Beijing
Hinduism has spread: Beijing
Captured Beijing (Qin Shi Huang)
When the smoke cleared, Korea had acquired four new World Wonders: the Great Wall (defense!), the Great Library, the Great Lighthouse, and Chichen Itza (more defense). See, I
told you we were only looking to defend ourselves!
(Wonderspamming much, Qin?)
Anyway, the Chinese empire was down to one weak city: Guangzhou. I probably could have left him alone, but Qin is just too much trouble. Plus, he blamed me for all of his troubles. Go figure! So the pre-emptive defense of Korea continued until the "annexation" of Guangzhou in 1030 AD. China is no more. Now
that's defense!