Where did Zhuge Liang's empty city plan happen?

Where did Zhuge Liang's empty city plan happen?

In the Romance of the Three Kingdoms, the empty city refers to the western city of Shu. Sima Yi led a great army to attack the street kiosks in central Sichuan. After Ma Su and other defenders failed, Zhuge Liang met them in Xicheng, but there were no soldiers in the city. He was the only one who went to the city to play the piano and sing.

Sima Yi thought there must be an ambush in the city, so he dared not attack easily, and was finally repelled by the Shu army. Later, Zhao Yun rushed to Xicheng to reinforce and finally defeated Sima Yi. This tactic is called "Empty City Strategy" and has become one of the famous psychological warfare strategies in China traditional culture.

Some people think that the empty city in the empty city planning refers to the present Yuncheng in Shanxi. In ancient times, Zhuge Liang was stationed in Yangpingguan, which refers to the west of Mianxian County in Shaanxi Province, so there are different opinions about empty cities.

Some people think that an empty city does not refer to Yuncheng, Shanxi. If the empty city is as big as Yuncheng, Shanxi, and it is located in the main traffic road, it is a battleground for military strategists. Zhuge can fool Sima Yi with an empty plan.

Too look down upon Sima Yi. Is it true that Sima Yi's scouts are all pig heads, so there are different opinions about which city the empty city refers to?