@AP: Yeah, that's the luckiest Korean game I've ever seen!
These are estimates only, based on possibly faulty memory, but to give you some notion of what I've seen during my 40-50 partial games while testing stuff out:
1. China did not build Great Wall, and collapsed under the weight of the barbs. Instead of DOWing on me, he DOW'd on Japan. Hangzhou flipped to me.
I think China gets the Great Wall less than 5% of the time, but even when it doesn't it collapses only about 10% of the time. More common (though not by much), they will lose Beijing. In all, I'd say you have to deal with a strong China in 4 out of every 5 games.
Never had a city flip to me. Wow.
2. I built Shenyang, and just as I was about to spread Taoism to it (never had state religion BTW), out of NOWHERE Christianity (AP religion) spread to me, so I had contact with the other AP civs. Which means I could exchange aesthetics/literature/music for a lot of the techs that I was missing. Bulbed philosophy which got me feudalism and machinery. I only researched paper and PP after that. (was even able to trade for engineering and guilds near the end with Ethiopia my buddy)
I
think I had Xtianity spread
once to one of my cities, and there was no AP attached. That said, in my typical games by the time I get Music
and Alphabet I am pretty good friends with China, and can get tons of techs off of them, usually up to and including Machinery. Feudalism is harder to score, because it's often too expensive for the techs I've got on hand to trade.
I've not concentrated on making contact with the West in my games, but an early unit that used "free" barb attacks to score Woodsman II could probably get out there real quick. The path that got you to those techs so early is very rare, but the Woodsmen II technique probably could get you nearly the same thing. As the mod designer, I don't consider this an obviously good thing ...
3. Sanshan was never built by China (which would have crimped my coastal city)
Sanshan gets built about 70% of the time, I'd say: more common than not, but not so common that you it's a surprise when the place is empty. When I don't have Sanshan to develop, I usually have to settle for Fuyori (??), 4 squares north and 1 square east of ... what is that, Changan on your map? Your other big Manchurian city, the one with Q, is one I almost always build.
Can you tell me what turn you built a third city in Manchuria and what turn you built the Pagoda? I presume you got Printing Press in 1220. It would help me figure out how to tighten the deadlines. Also, I'd welcome any other ideas you have for making it more challenging. I chose these UHVs not because they were easy, but because they were historically suggestive.
Any technical problems I should know about?