How does the Seven Laws Long March express the author's feelings?

The Seven Laws Long March expressed the author's joy and lofty sentiments, and praised the heroic and tenacious revolutionary heroism and revolutionary optimism of the Chinese Red Army of Workers and Peasants. At that time, he led the Central Red Army across Minshan, and the Long March was coming to an end. Looking back on the countless difficulties and obstacles overcome by the Long March in the past year, it is full of joyful fighting pride.

Long March: During the period from 1934 to 10, the main force of the Central Red Army made a strategic shift from the central revolutionary base area, passing through eleven provinces such as Fujian, Jiangxi, Guangdong, Hunan, Guangxi, Guizhou, Sichuan, Yunnan, Tibet, Gansu and Shaanxi, and defeated the enemy's repeated encirclement and interception and numerous military, political and natural disasters and marched.