According to historical records, the population of Shu reached more than 900,000 in its heyday, while men in the Three Kingdoms period were in their prime, that is, the age of joining the army, accounting for about 30% of the population. If you don't count the retired veterans, the strength of Shu in its heyday is about 300 thousand. By the way, Liu Bei's revenge for Guan Yu in The Romance of Three Kingdoms is exaggerated, because the plot of the novel needs it. At that time, Liu Bei used the troops in the city near the main battlefield in Shu because he wanted to divide a considerable part of his troops to defend Hanzhong and resist the enemy Cao Cao, and the troops were assigned to a city. He only used 6.5438+0.5 million troops to fight Sun Quan, which is recorded in the history books.