blizzrd
Micromanager
Because it completely borks the economy.
China's in bad economic shape between 1000 and 1500 AD anyway because of the drag of having 8 cities, and all the whipping you have to do to build all those temples and cathedrals. (Having a bank, grocer, and market in all 8 barely pushes me above 70% science, even with the Great Lighthouse, Temple of Artemis, and both shrines.)
Chop forests for the temples, don't use the whip for them.
Now, my cities are always in tip-top shape, and I always have more than my share of wonders, but by the time I have whipped out 50 or 60 troops my science is already starting to dip below 10% from the unit costs and the unhappiness.
Please tell me I'm missing something.
I just did China under 1.184. I never went below 70% science, finishing Olympic Park in 1600AD for the start of my 5th Golden Age. The Mausolleum of Mausollos is an absolute powerhouse. I got almost all the World Wonders with the exception of the Pyramids, Statue of Zeus, Colossus and Colosseum.
I started to build the great army in around 1300AD and easily finished it in the early 1500s. I got both conquerer events (extra troops) and Aztecs, Inca and Portugal as voluntary vassals. Mongolia never even threatenned to declare war. Japan (and their vassal Khmer) did once around the 1200AD mark but they only landed a few Axemen and Catapults in Korea which were easily removed.
I used the Stonehenge approach to get CS and the scientists required to bulb Mathematics. The key step was having contacts with all civs on Turn 90 once Rome has spawned to trade techs and start quickly then build the Oracle for Calendar. I got Calendar (Taoism) in 640BC in this way.