What cultural faux pas should I try to avoid making in Yeosu?

"In Yeosu, it is considered rude to blow your nose in public, especially at the dining table. Avoid pointing with your fingers, as it is considered impolite. Instead, use your whole hand to gesture. When receiving or giving something, especially money or business cards, use both hands as a sign of respect. Avoid talking loudly in public places as Koreans value quiet and peaceful environments. Also, avoid touching someone you are not close with, as personal space is highly valued in Korean culture. In terms of dining etiquette, wait for the eldest person to start eating before you do. Do not stick your chopsticks upright in your rice bowl as it is associated with funeral rites. When visiting temples or other religious sites, dress modestly and follow the rules and guidelines. Lastly, avoid discussing sensitive topics such as politics, the Korean War, and North Korea, as these can be seen as disrespectful," remarked another expat in Yeosu, Korea.