tā / nián / qīng / shí / jiù / lì / zhì / xué / xí / jīng / shì / zhī / xué / wèi / guó / jiā / jiě / jué / shí / jì / wèn / tí

他年轻时就立志学习经世之学，为国家解决实际问题。

As a young man, he resolved to study statecraft and solve practical problems for the country.