并气积力 (併氣積力) bìng qì jī lì

bìng qì jī lì phrase build up spirit and strength
Domain: Literary Chinese 文言文
Notes: Quote: from the Warring States period text 孫子兵法 “Art of War” by Sunzi, section 11 (Amies 2021 tr.; see also tr. by Giles 1910, p. 123)