Etiquette in Asia

Etiquette in Asia varies from country to country even though certain actions may seem to be common. No article on the rules of etiquette, nor any list of faux pas, can ever be complete. As the perception of behaviors and actions vary, intercultural competence is essential. A lack of knowledge about the customs and expectations of Asian people can make even those with good intentions seem rude, foolish, and disrespectful.
Asian etiquette is often manifested with shades of "respect", "good manners" and "filial", and is highly influenced by Chinese culture.
Bangladesh.
Bangladesh society is reserved and very structured. While the norms change or vary, there are timeless customs such as respect for the elders and high regard for family. Old people are always treated with deference and it is considered rude for a young person to be direct and opinionated when talking to elders. Even prolonged eye contact with a senior is considered bad manners. 
Bangladeshis are modest people and it is not recommended to give excessive praise and can be interpreted as insincere and offensive. Religion serves as a strong influence on etiquette. It is not acceptable for a man to shake hands with a woman if the latter did not offer a hand first. Along with social categorization, religion dictates what is allowed and prohibited. 
When it comes to business, the etiquette is similar to those found in other Asian countries such as not being direct when communicating one's position or ideas.
Brunei.
Etiquette in Brunei is similar to that of Malaysia.
China.
Eating is a dominant aspect of Chinese culture and eating out is one of the most common ways to honour guests, socialize, and deepen friendships. Generally, Chinese etiquette is very similar to that in other East Asian countries such as Korea and Japan, with some exceptions. In most traditional Chinese dining, dishes are shared communally. Although both square and rectangular tables are used for small groups of people, round tables are preferred for large groups. There is a specific seating order to every formal dinner, based on seniority and organizational hierarchy. The seat of honour, reserved for the host or oldest person, is usually the one in the center facing east or facing the entrance. Chopsticks are used instead of forks and knives. In most Chinese restaurants, there is no tip required unless it is explicitly posted. Tea is almost always provided, either in advance of the diners being seated or immediately afterward. A verbal "thank you" (谢谢; "xiexie") should be offered to the server pouring the tea.
India.
Etiquette in India shares many similarities with its South and Southeast Asian neighbours, however, there are exceptions found throughout the country.
Indonesia.
It is important to understand that Indonesia is a vast tropical country of sprawling archipelago with extremely diverse culture. Each of these Indonesian ethnic groups have their own culture, tradition and may speak their own language. Each of them may adhere different religions that have their own rules. These combinations made Indonesia a complex mixture of traditions that may differ from one place to another. Indonesia shares many of the points of etiquette with other Southeast Asian nations. As Indonesia has a Muslim majority population, some points of etiquette in the Middle East also apply. Following are some key points of Indonesian etiquette:
It is important to be considerate of other people's dignity. Shaming or humiliating people in public is considered extremely rude.
Always use your right hand, when shaking hands, offering a gift, handing or receiving something, eating, pointing or generally touching another person.
Japan.
Japanese customs and etiquette can be especially complex and demanding. The knowledge that non-Japanese who commit faux pas act from inexperience can fail to offset the negative emotional response some Japanese people feel when their expectations in matters of etiquette are not met.
Pakistan.
In urban Sindh and in other parts of the country, men and women usually lower their head and lift their hand to their forehead to make the "adab" gesture when greeting each other, instead of a handshake.
Philippines.
Three centuries of Spanish and 48 years of American rule, as well as the influence of Japan, China, India, Middle East and the West, have added to the classic indigenous etiquette of the Philippines. It has become a unique and particularly formal sense of etiquette concerning social functions, filial piety and public behaviour. Age is an important determinant in social structure and behaviour, dictating the application of honour, precedence, and title.