Do/Do Not!, Hong Kong
Local people here are mostly not quite get using on close body contact like, kissing on cheek, a great hug for greeting or goodbye
People sometimes are quite shy in answering foreigners approaching for question raised. Though we are shy, most can still offer assistance for help in giving proper direction. Esp in English or Mandarin
Leaving chopsticks sticking vertically into the bowl is a bad omen. This resembles incense sticks in a bowl of ashes, a sure death sign.