Conversation so far:
which country is called land of morning calm
South Korea is called the 'Land of Morning Calm'.
why is South Korea called the 'Land of Morning Calm’
South Korea is called the 'Land of Morning Calm' for its spellbinding natural beauty of picturesque high mountains and clear waters and its splendid tranquillity, particularly in the morning.
where does south korea's name come from
The name Korea is derived from Goguryeo, which was one of the great powers in East Asia during its time.

Question: how many people live in the capital
Self-contained rewrite: how many people live in south korea's capital