miàn duì / dí rén / de / jìn gōng / tā men / cǎi yòng / le / tuō zì jué / děng dài / yuán jūn / dào lái面对敌人的进攻,他们采用了拖字诀,等待援军到来。Facing the enemy's attack, they used delaying tactics to wait for reinforcements.