When traveling or working far away, renting a hotel room is inevitable. However, many people still maintain a strange but common habit: knocking on the door three times before entering the room, even though they are sure that the room is empty. So where does this action come from and what does it mean spiritually, psychologically and culturally?

Habit or ritual to avoid?

Knocking on the door before entering a room is often considered a polite act, to announce one's presence to those who may be in there. But in the case that the room has been confirmed to be empty, why do many people still maintain this habit?

According to feng shui and spiritual experts, this action is not simply a courtesy, but also a "ritual" to ward off evil spirits, to notify "invisible forces" that people are about to occupy that space. Although there is no specific scientific evidence, this habit brings a sense of security to many people.

Knock three times – a symbolic number

The number three is considered a sacred number in many cultures. In Eastern beliefs, three represents heaven – earth – human, or the three talents. In Buddhism, three also symbolizes the three treasures: Buddha – Dharma – Sangha. Therefore, knocking on the door three times is not only a mechanical action, but also implies praying for peace, informing and dispelling bad energy.

Some people believe that each knock is a "communication" with the invisible space, to convey the message: "I come with good intentions, asking for permission to stay." This is also a way to not disturb the energy source that exists in the room.

Psychological factors: Feeling of control and safety

In addition to the spiritual factor, the act of knocking on the door also has a great psychological effect. When entering a new space, especially a closed space like a hotel room, many people feel anxious or unfamiliar. Knocking on the door before entering creates an emotional "buffer", helping to mentally prepare before entering a strange environment.

This action helps create a feeling of establishing ownership of the new space, creating initiative and control over the situation. It also helps to minimize surprises or the feeling of being "invaded" by something inexplicable.

Real experience: Not just anyone's story

Many people have shared that they feel insecure if they forget to knock on the door before entering a hotel room. Some cases even encounter strange phenomena such as insomnia, nightmares or feeling cold even though the room is air-conditioned at a stable temperature.

Ms. Hanh, a long-time tour guide, shared: "Even though I have been on hundreds of trips, I always tell guests to knock on the door three times before entering the room. Regardless of whether the room is locked or not, it helps people feel much more secure."

Steps to “cleanse energy” when entering a hotel room

Many people also pass on to each other the steps to “cleanse energy” when checking in, in which knocking on the door three times is the first step. The steps usually include:

- Knock on the door three times, then wait a few seconds before opening the door.

- Turn on all the lights in the room, pull the curtains to “invite light” in.
- Walk around the room, check the closet, curtains and bathroom.

- Open the main door or window for a while to let the air circulate.

- Put personal items such as a water bottle, handbag on the bed or table as a way to “mark your presence”.

Although there is no scientific research to verify the effects of knocking on the door three times, this is a habit that comes from life experience, beliefs and personal beliefs. In tourism and hotels, respecting personal beliefs not only helps guests feel secure but also shows sophistication in service.

Knocking three times before entering a hotel room is not only a spiritual or cultural act, but also a sign of caution, thoughtfulness, and self-care. Whether you believe in the invisible world or not, this small act can help you feel more secure on every trip. Sometimes, seemingly superstitious habits contain wisdom passed down through generations.