(0) 275 BC: Re-arrange and change production. Trade Philosophy to Aztecs for Seafaring.
(1) 250 BC: We are the happiest civ. Begin University.
(2) 225 BC: Romans begin Great Library. Germans nearly complete Great Library. Xinjian settlers builds Shantung. Beijing builds Horsemen to move around for disorder management.
(3) 200 BC: Indians develop wheel. Babylonians nearly complete GL. Leipzig builds Great Library. Indians, Babylonians, English, Aztecs change to Colossus. Romans abandon. Aztecs build Colossus. Indians change to Lighthouse. English change to Copernicus.’ Babylonians, Aztecs change to Great wall. Canton Caravan.
(4) 175 BC: Indians Build Lighthouse. Babylonians, Aztecs, Germans develop republic. Disorder in TatuCanal. 8 Caravans to Beijing for Mike’s. TatuCanal settlers builds Chinan.
(5) 150 BC: Shanghai caravan. Beijing builds Michelangelo’s Chapel. (24,28) hut: crusaders. Mine up silk near Hangchow. Rush StraybowCanal Library to 60s for 60 gold.
(6) 125 BC: …
(7) 100 BC: Hangchow settlers. Chengdu caravan. Xinjian Caravan. Pheasant mined near Hangchow.
(8) 75 BC: Babylonians nearly complete Great Wall. Tientsin caravan. Chengdu Settlers builds Kaifeng.
(9) 50 BC: English develop Construction. Babylonians build Great Wall, Germans, Aztecs change to Oracle. Germans develop banking. StraybowCanal Library. (6,24) hut: Navigation! Change Canton production to Carval.
(10) 25 BC: Aztecs abandon Oracle. Nanking Caravan. (23,45) hut: crusaders.
Notes:
The English are building Copernicus' Observatory, so if we want it, we'll have to build it soon. I already have 3 caravans near StraybowCanal, and one more on the way. I think it will be worth it; Straybow is already producing 12 science. Once Straybow reaches size 5, I would put 2 citizens to scientists.
I think there are specials under (26,28) and (24,24), near Kaifeng. Perhaps I should have built Kaifeng one square over, but I wanted to be on the river, and if we limit cities to size 8, it won't matter.
If we want to celebrate cities, a quick test demonstrates that in order to get 3 black hats per city, we will need to build enough cities to get to Canton (or so) again for the city name suggestion. 3 black hats and hanging gardens would allow a size 8 city to celebrate for 6 luxuries, two of which can be produced by a marketplace; a net gain of a couple of trade, depending on corruption. I don't think we can get that large of an empire, unless we plant a ton of small cities on our outskirts.
If we want to celebrate, we will want to decide on size 4 or 6 cities, for which an empire might be manageable to make large enough. A better plan, I think, will be to grow cities past size 5, and use specialists to increase science. Scientists produce 3 science not subject to corruption, more than the trade that can be produced on most squares, and it all goes to science. This strategy would also reduce our need for courthouses.
EDIT: Further to my idea of using specialists for science production, if a city is built on grassland, and works 3 squares of irrigated grassland (or some other square producing 3 food, such as fish), the city will be able to support 3 scientists. That is 9 science, plus at least one from regular trade, and a library, will yield some 15 science production in the city. This strategy will allow us to largely ignore black hats, because they will be "hidden" by the scientists, and allow cities to be speciallized into either science cities or tax cities (using taxmen instead of scientists), making improvement production more efficient.