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

"In Lantau Island, it is considered disrespectful to point with your index finger, so try to use your whole hand instead. Avoid touching people's heads as it is seen as an invasion of personal space. It's also considered impolite to discuss politics, especially issues related to Hong Kong's relationship with mainland China. When visiting temples, dress modestly and avoid taking photographs without permission. It's also important to not disturb worshippers. If you're invited to someone's home, remember to remove your shoes before entering. In dining etiquette, never stick your chopsticks upright in your rice bowl as it is associated with funerals. Also, don't tap your chopsticks on the edge of your bowl, as this is something beggars do to attract attention. When giving or receiving gifts or business cards, use both hands as it is seen as a sign of respect. Lastly, avoid public displays of affection as they are generally frowned upon," remarked another expat who made the move to Lantau Island, Hong Kong.