Shan Liang
Answer analysis: The correct answer is to run out of ammunition and food
In the picture, "dan" can be seen as the word "tan" without the radical "gong" on the left, which is understood to mean "bulk out"; "liang" can be seen as the word "liang" without the radical "mi" on the left, which is understood to mean "grain". When combined together, it is the idiom "shoot out the grain".
Introduction to the idiom: [Interpretation] During the battle, ammunition was used up and food was cut off. Refers to a dangerous situation in which it is impossible to continue fighting.
[Source] "The Epitaph of Zhao Gong" by Yang Wanli of the Song Dynasty: "The Duke stood up and fought with the soldiers, and won many victories. In seven years, food and support were exhausted, and the situation could not be restored, so he led thousands of his troops back south."
[Synonyms] at the end of the road, at risk, on the verge of despair
【Antonym】The army is well-equipped with sufficient food and supplies, a steady stream of troops, and is in the ascendant.