Please talk about the main reasons why Zhuge Liang's empty city plan was successful.

This topic mainly examines the accumulation of characters and storylines.

First, Zhuge Liang is very familiar with Sima Yi's suspicious and cautious use of troops. Second, Zhuge Liang is resourceful and calm. At the critical moment when Sima Yi was besieged on all sides and outnumbered, he used his quick wits and made full use of Sima Yi's suspicious and cautious characteristics to come up with an empty plan and take risks boldly.

A: First, Zhuge Liang is well aware of Sima Yi's suspicious and cautious use of troops. Second, Zhuge Liang is resourceful and calm. At the critical moment when Sima Yi was besieged on all sides and outnumbered, he used his quick wits and made full use of Sima Yi's suspicious and cautious characteristics to come up with an empty plan and take risks boldly.