tā / suī / rán / nián / qīng / què / mǎn / fù / jīng / lún / duì / lì / shǐ / wén / huà / le / rú / zhǐ / zhǎng

他虽然年轻，却满腹经纶，对历史文化了如指掌

Though young, he is extremely knowledgeable and knows history and culture like the back of his hand.