With lots of hardships, our army finally broke through the enemy's first barrier.
Examples (Wiktionary)
Mandarin
但我们相信,已经发动的抗战,必将因为我党和全国人民的努力,冲破一切障碍物而继续地前进和发展。
但我們相信,已經發動的抗戰,必將因為我黨和全國人民的努力,衝破一切障礙物而繼續地前進和發展。
dàn wǒ men xiāng xìn , yǐ jīng fā dòng de kàng zhàn , bì jiāng yīn wèi wǒ dǎng hé quán guó rén mín de nǔ lì , chōng pò yī qiè zhàn gài wù ér jì xù de qián jìn hé fā zhǎn .
But we are confident that, through the efforts of our Party and the whole people, the resistance already started will sweep aside all obstacles and continue to advance and develop.