Daily Chinese Idiom Guessing Game
To work hard and persevere through difficulties and hardships.
不怕艰难困苦，坚持英勇斗争。
陶铸《崇高的理想》我们要过渡到共产主义社会，还要经过长时期的艰苦奋斗。”
Through years of jiankufendou, the startup eventually became a market leader.