I'm giving 100 points!

Type all of the rules back then in Korea.

1. Hangul Pronunciation Changes

2. Carry Over

(If the final consonant (받침) is followed by a vowel it's sound gets combined with the next vowel and it is pronounced as a part of the next syllable & not as an independent character.)

3. Nasalisation

(In Korean phonetic system , ㄴ ㅁ and ㅇ are considered as the nasal sounds. But we must remember that if "ㅇ" is in the initial position it is not a nasal consonant but a null consonant with no sound.)

4. Aspiration

(When a consonant is followed by ㅎ , it gets influenced and changes to aspirated consonant.)

in that passage i would say the sentence which best describes the overall impact of the setting is when they mention the absence of people because it suggests that taking a walk at night is unusual.