Just checked the latest version, it seems that due to China terrain being moved eastwards, the city names become invalid. Before we re-make the city name map, some further terrain adjustments need to be done. I saved the adjustment as the attachment, main points include:
Gansu corridor looks longer than before, a very good improvement. We need some narrow plains and oases in the area, also some resources need to added to support Han's Commanderies: Wuwei, Zhangye, Jiuquan, Dunhuang:
http://en.wikipedia.org/wiki/Hexi_Corridor
In Qinghai, the upper reach of Yellow river and Yangtse river need to be altered. In this map the upper Yangtse flows into Mekong, that is an obvious mistake.
Nanzhao has a big lake, which is too exaggerated. The area (equal to Yunnan province today) has some lakes but most of them are too small to be put in this map. Also, the area has more plains in the east than in the west:
http://en.wikipedia.org/wiki/Yunnan
It makes more sense to have 2 tiles of plain in the eastern area to support Han's Yizhou Commandery, and one plain in the western (near Mekong) to support later Yongchang Commandery.
One more plain needs to be added southeast of Xianyang, representing Hanzhong basin (Hanzhong the name indicates the river Han), an important link between Xianyang and Shu. Some more impassible forests should be put around the area, but still allowing passage by some valleys.
Luoyang terrain needs some change, one tile of plain in its west, one hill in the east and one hill in the south should better present the nature of this area as a small basin.
Peaks around Jinyang should be relocated, also rivers around the city should be adjusted. Sanggan-Yongding river should be added due to its importance as the seat of Xianbei's capital Pingcheng:
http://en.wikipedia.org/wiki/Pingcheng
More impassible forests south of Huai river, which represents the mountain Dabie:
http://en.wikipedia.org/wiki/Dabie_Mountains
The area where river Han joins Yangste should be populated with more hills and an iron/bronze nearby, the area has been the center of bronze mining since Shang Dynasty. Jiangxia Commandery existed here in Han Dynasty, later Sun Quan built Wuchang (current Ezhou) here:
http://en.wikipedia.org/wiki/Ezhou
Throughout the history of the state of Wu, Wuchang has been the second capital, accompanying Jianye.
The city of Jianye should be removed. 1. It's at the wrong place. 2. The city didn't exist until 211 AD:
http://en.wikipedia.org/wiki/Nanjing
It makes sense to make it spawn in 211 AD, also at the beginning of the 220AD scenario, the location being further east to the Yangtse river bend, as you can see from the map of Nanjing.
Min Yue should stop renaming itself to 'Fuzhou' when Qin, Han or Jin captures it. Qin should rename it to 'Minzhong', Han or Jin to 'Dongye'. The city was not renamed to Fuzhou until 725 AD:
http://en.wikipedia.org/wiki/Fuzhou
More impassible forests around the city should represent the Wuyi mountains, more fish at its coast, more timber, tea.
More hills to the north of Panyu-Nanhai, more plains in western Nanyue (current Guangxi province), one pearl near the coast, ivory near Vietnam to lure Qin to build Guilin and Xiang Commanderies.
More impassible forests at the source of the river Liao:
http://en.wikipedia.org/wiki/Liao_River
More hills and forests east of Liaodong, and more plains in lower Yalu/Amnok river. This is to make Guknaeseong (Gungnae Fortress) a better place for Goguryeo to spawn up in 3 AD:
http://en.wikipedia.org/wiki/Gungnae_Fortress
This makes it more difficult for Chinese troops to go from Liaodong to attack Goguryeo, quite realistic.
Gojoseon relocated to Wanggeomseong, which should be renamed 'Lelang/Nakrang' when captured by Han:
http://en.wikipedia.org/wiki/Lelang
Lelang has been kept by Chinese since 108 BC until Goguryeo conquered it and renamed it to 'Pyongyang' in 313.
Heilong/Amur river and Nen river in Manchuria:
http://en.wikipedia.org/wiki/Heilongjiang_River
http://en.wikipedia.org/wiki/Nen_River
Greater Khingan mountains in Manchuria should be put further west:
http://en.wikipedia.org/wiki/Khingan_Mountains
In Xinjiang, Tian Shan mountains needs overhaul:
http://en.wikipedia.org/wiki/Tianshan_Mountains
Upper Ili river and Ili valley should be represented:
http://en.wikipedia.org/wiki/Ili_River
Spices and Grapes near Tarim river to allow Tocharian states to trade with Han.
You can see all above changes in the file attached, when you're finished, I can provide new city name map.