If one wants to express that China is absolutely big and not only in comparison with Germany, one can put the adverb 很 hěn (= very) in front of the adjective in order to neutralize the relative meaning of the adjective-verb.
中 | 国 | 很 | 大 | 。 |
zhōng | guó | hěn | dà | _ |
middle | country | very | big | _ |
China | very, quite | big, old, main | 。 | |
China is (absolutely) big. |
德 | 国 | 很 | 小 | 。 |
dé | guó | hěn | xiǎo | _ |
virtue | country | very | small | _ |
Germany | very, quite | small | 。 | |
Germany is (absolutely) small. |