Source: "Although the road is dense, it is impossible; Although things are small, you can't do it without doing it "is the source of" although the road is far, the line will come, although things are difficult, you will succeed if you do it ".
Similar to a famous saying:
Insisting on a great cause requires an unswerving spirit. -Voltaire
The worst enemy is that there is no strong belief. -romain rolland
Will lies in tempering, and success lies in persistence. -Zhou Haizhong
As long as you have strong willpower, you will naturally have ability, cleverness and knowledge. -Dostoevsky