Why does the Chinese name for Poland mean "abandoned honour"?
It's all joking lah!

The translation of a nation name is often chosen according to its sound, but Chinese characters have their own meanings as well, so you can indeed explain it somehow that way, which has nothing to do with the characteristics of that nation.

英国 Britain：英勇之国 the nation of bravery

法国 France：律法之国 the nation of law

德国 Germany：美德之国 the nation of virtue

捷克 Czech：捷速攻克 who quickly conquered

匈牙利 Hungary：匈＞胡＞白人+牙利
=white with sharp teeth

etc.