Haha, a moment later, I received a scientific leader.
I mean, I don't think you necessarily need to weaken the Persians - they were a formidable force, esp. to the Greeks. Same with the Romans - they were a powerful force through a good chunk of history.
Game details, eh? Dunno what you meant, but here's some details in story format.
So early on, the Chinese expanded throughout eastern China, just churning out settlers as fast as possible. Tianjin, Qingdao, Shanghai, Fuzhou, Hong Kong, are all lined up against the eastern coast, while Nanjing, Chongqing, Xi'an, Guangdong established along the main rivers of China. Manchuria with quickly established with the cities of Shenyang, Harbin, and Vladivostok (thus containing the Koreans), along with southwest China (with Chengdu and Kunming) and India, south of the Ganges (including Calcutta, Chennai, Vishakhapatnam, Patna, and Gandhinagar).
Abroad, settlers were quickly dispatched through a perilous journey to America - full of sea monsters and other nautical dangers. But those who survived were able to populate the American West Coast. Along the Pacfic coast are the cities of San Francisco and Los Angeles, separated by the vast deserts of New Mexico and Arizona from the rest of the colonies. Unfortunately an expedition sent up to the Pacific Northwest were lost when Mt. St. Helen's erupted - perhaps another group will try their luck in the future. Land east of the Mississippi proved to be especially fertile, with cities such as New York, Boston, and Washington, DC blossoming. Chicago, Detroit also enjoyed good land around the Great Lakes. The American Southeast, stretching from St. Louis to Atlanta, Miami, and Texas (Dallas and Houston), was a bit harder to colonize, with native raids and forests (that needed to be cleared). In addition, the Sioux in the Midwest and Iroquois (up in the Canadian forests), also stood as a barrier against American colonization. However, due to their low tech. and little expansion, most of America was able to be established. The priority in North America is to setup infrastructure - connecting the two coasts, as well as expanding the territory grab, before the Aztecs and Native Americans can grab anything else.
As if knowing how the world was shaped (^_~)V, settlers and workers were sent down the Central American coast. Before the grand Panama Canal project (and Panama City) can be built, Chinese workers need to cut through the thin strip of forest separating the Atlantic and Pacific Oceans.
Another group of settlers moved along the Indian coast towards the Arabian peninsula. However, Roman ships stood at gate to the Red Sea. Unable to sail around, the Chinese settlers set off near modern day Aden and journeyed up the Arabian desert. Staying east of Mecca, the settlers soon requested permission to pass through Persian territory, which occupied as far west as modern-day Israel. Receiving a confirmation, the settlers crossed the Sinai and settled, creating the city of Port Said (after eliminating the barbarian camp). With the city established, the strategic Suez Canal was thus created, which will help eliminate the need to sail around Africa to reach Europe.
Right now, junks are still mapping out the African coast, with the interior sections still a grand mystery. Parts of Europe have been explored, revealing a very fragmented yet very developed continent. In the South Pacific, the city was Sydney was just established, with plans on the way to populate the rest of the eastern Australian coast.
That's it for now... we'll see what happens as the Chinese continue to expand throughout the world - will they continue uninterrupted, or will a competing civ stand in their way? Only time can tell!
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