Exar Kun wrote:Six_and_Up wrote:Besides why would Changan be lightly defended? Its one of the main capitals. If anything troops would be stationed there first and then sent to other areas of China.
Not only that but after the secession by Liangzhou in 184 the Han fortified Chang An and its environs to be the main fort for resisting Qiang rebellions in thw west.
I think I know the answer.
Sima Yi knew that Zhuge Liang was an extremely careful man. He knew that even if this plan were proposed, Zhuge would reject it on the grounds that it was too risky. He could therefore leave only a few hundred troops at Chang'an. He also knew that the Qiang would not attack because they had not yet been brought into the war by Zhuge.
That's my two cents at least.

