Source: Swear to be the first-class flag, taken from Qin Ce III, the Warring States Policy.

1, which means that as long as it is the enemy's flag, it will be taken down, which means that it is brave and invincible.

2，only: only。 Flag: the flag of the enemy, extending to the highest goal. Syntactically, prepositional object, an inversion sentence in classical Chinese, uses the structure of "for …………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………