Opening the door and letting off water is a part of the ancient traditional culture of China, and it is a kind of etiquette to entertain guests. The ancients believed that water as a medium can wash away the fatigue and fatigue of visitors, so that the body and mind can be relieved and relaxed. In many dynasties in history, there was an elegant fashion of opening doors and releasing water. Especially in the Southern and Northern Dynasties and the Tang Dynasty, this etiquette was particularly popular and became an important cultural phenomenon.

The core ceremony of opening the door and discharging water is to provide services of washing hands and soaking feet for guests. When guests enter the host's house, the host will personally pour water and wash their hands for the guests. Please put your hands into the basin and wash them with clear water to show your friendship and respect. Later, the host will make a bath of perfume for the guests, so that they can soak their feet comfortably and relieve fatigue. The significance of this etiquette is to let people feel the beauty of life again and enjoy the emotional soul between people.

Today, the traditional etiquette of opening doors and discharging water not only retains the traces of its traditional culture, but also develops and grows in modern life. Many enterprises and hotels have begun to regard this etiquette as an important service experience when welcoming guests to meet people's spiritual needs. With the changes of the times, the traditional etiquette of opening the door and releasing water will continue to be preserved and passed down.