1. Nominally, it was the Warring States Period: Zhao Kuo, the son of Zhao She, a famous soldier of Zhao, studied the art of war when he was young, but his father could not beat him in military affairs. Later, he succeeded Lian Po as Zhao Jiang in the Battle of Changping. I only knew how to act according to the art of war, but I didn't know how to be flexible. As a result, I was defeated by Qin Jun.

2. Idioms on paper are from Historical Records Biography of Lian Po and Lin Xiangru.

3. Chinese pinyin on paper: zh ǐ shà ngtá nb and ng.

4. The meaning of armchair strategist: Talking about the strategy of literal warfare is a metaphor divorced from the actual situation and empty. Refers to empty talk theory can't solve the problem.