1, fake. In fact, this is just a story adapted from Pei Songzhi's annotation "Three Things of Guo Chong". In the battle of Jieting, Sima Yiyuan was in Luoyang. After conquering Mengda, he returned to Wancheng thousands of miles away from the incident. Zhang He played against Zhuge Liang. Seeing the failure of the street pavilion, Kong Ming quickly withdrew to Hanzhong. Therefore, the event itself is fictional.

2. The thirty-first of the thirty-six plans, the empty city plan, refers to deliberately signaling people not to be equipped with soldiers when the enemy is outnumbered, so as to make the enemy have the illusion and thus scare off the enemy. Later, it generally refers to the strategy of covering up one's own strength emptiness and confusing the other side. It is a military work based on China's excellent ancient military thought and rich struggle experience, and it is one of the long-standing cultural heritages of the Chinese nation.