I was just reading an article on the web as follows:
http://house.tom.com/1004/2004414-5762.html
Basically it said that the Taihedian, or Hall of Supreme Harmony, was orignally christened "Fengtiandian" (Heaven-Serving Hall) by Emperor Yongle in 1420, then changed to "Huangjidian" (Extreme Royal Hall) in 1562. In 1645, one year after the Qing had conquered China, Emperor Shunzhi then changed the name to "Taihedian".
Lu Xiaofeng was set in the Ming Dynasty, and according to the TVB series Ye Gucheng and Ximen Chuixue arranged for their duel to be held at the "Peak of the Forbidden", and they also mentioned that it was the roof of the Taihedian. Does the book mention Taihedian, or was Gu Long careful enough? As we don't really know which year the Duel is set in, it could have been Fengtiandian or Huangjidian, but Taihedian would require Lu Xiaofeng (and pretty much everybody else apart from honest monk) to have that Qing pigtail.
Or is my source wrong, and Taihedian is actually acceptable for a Ming setting? My main reason for asking is that I'm writing something for a MUD I play on, and it's set in 1643 China, towards the end of the Ming, and my entire Forbidden City is using current names (which I thought were dated from 1420). If these names were really changed during the Qing I'd have to research all the original names! =(
Thanks,
Ian