How to Worship Hei Bai Wu Chang?

Hei Bai Wu Chang, commonly known as Da Er Ye Bo or the Black and White Impermanence, are important guardian deities in Chinese folk belief. Many devotees worship them during certain festivals or on ordinary days when they feel a spiritual connection, seeking protection for their household, blessings of peace, and deliverance from evil influences.

Who Are Da Er Ye Bo?
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“Da Er Ye Bo” is not a single deity, but a collective title referring to two underworld guardians:
Da Ye Bo (Xie Bi An, the White Impermanence)
Appearance: Pale face with a long tongue, gentle and kind expression
Symbolism: Protection, good fortune, and light
Er Ye Bo (Fan Wu Jiu, the Black Impermanence)
Appearance: Dark face, stern and dignified expression
Symbolism: Justice, punishment of evil, and maintenance of order
Originally underworld officers tasked with enforcing cosmic law, their loyalty and strict sense of justice earned them deep respect over time. In popular belief, they gradually came to be revered as guardian deities, maintaining balance between the realms of yin and yang and offering blessings to the righteous.
The Connection Between the Zhongyuan Festival and Hei Bai Wu Chang
The Zhongyuan Festival (also known as the Ghost Festival, Hungry Ghost Day, or Ullambana), which falls on the 15th day of the 7th lunar month, is an important occasion for ancestor veneration and universal salvation rituals. According to folk belief, on this day the gates of the underworld open, allowing wandering spirits to roam the human world.
During this time,Hei Bai Wu Chang often serve as guardians:
Maintaining order between yin and yang, preventing malevolent spirits from causing harm
Assisting deities in overseeing the salvation rites, ensuring the ceremonies proceed smoothly
Protecting devotees’ households, granting peace and safety
For this reason, many temples set up special altars during the Zhongyuan Festival to worship Hei Bai Wu Chang. However, this does not mean that they can only be venerated during this festival, devotees may also worship them on ordinary days or other suitable occasions to seek blessings and protection.
How to Honor Hei Bai Wu Chang
What matters most in worship is sincerity and respect. The offerings need not be extravagant, but they should be fresh, clean, and neatly arranged.
Preparation of Offerings

Meat or vegetarian dishes: Traditionally the three sacrificial meats (chicken, pork, and fish), or vegetarian options such as tofu and vegetable dishes.
Fruits and pastries: Round fruits like apples, oranges, and grapes symbolize completeness; pastries such as longevity peaches or steamed cakes symbolize blessings and prosperity.
Tea and rice wine: Typically offered in sets of three cups.
Fresh flowers: Lilies, chrysanthemums, and orchids are suitable; avoid flowers with thorns.
Incense, candles, and joss paper: To connect with the divine and deliver offerings to the spiritual realm.
Ritual Procedure
Begin by offering incense to the Jade Emperor (Tian Gong), asking for divine witness and blessing.
If worship takes place in a temple, first pay respect to the main deities (such as Guanyin, Cheng Huang, or Guan Di), before proceeding to the hall of the underworld guardians.
Present incense and offerings before the statues of Hei Bai Wu Chang.
After worship, burn the joss paper in the designated furnace as an act of reverence and symbolic delivery of offerings.
Important Etiquette
Respectful demeanor: Dress neatly and remain solemn; avoid laughter or casual talk, especially in front of the deities.
Clean offerings: Ensure food and flowers are fresh; never use spoiled or carelessly prepared offerings.
Burning safety: Burn joss paper only at the designated place to avoid attracting negative energies.
Sharing the offerings: After worship, offerings may be shared among family, symbolizing blessings being received together.
Sincerity above form: The most important aspect is the genuine devotion of the heart, not the complexity of the ritual.
The Significance of Worshiping Hei Bai Wu Chang
Worship during the Ghost Festival carries profound meaning:
Seeking protection: Inviting Hei Bai Wu Chang to safeguard the household from malevolent forces and misfortune.
Harmony between realms: On the day when wandering spirits roam freely, devotees pray for Hei Bai Wu Chang to uphold balance and order between yin and yang.
The Birthday of Hei Bai Wu Chang

Unlike deities such as Mazu, Guanyin, or Guan Di, whose birthdays are well-known and celebrated on fixed dates, Hei Bai Wu Chang do not have a unified or officially recognized birthdate. This is because they were originally wardens of the underworld, guardians in Daoist and folk belief rather than mainstream celestial deities, and thus their birthdays were never formally recorded in historical texts or official calendars.
As folk traditions evolved, different temples established their own customs for celebrating Hei Bai Wu Chang’s birthday. In some places, the celebration is held on the 15th day of the seventh lunar month (the Ghost Festival), aligning with the significance of universal salvation, honoring ancestors, and appeasing wandering spirits. This timing is fitting, as Hei Bai Wu Chang are enforcers of order in the underworld, directly connected to the meaning of the festival.
For this reason, there is no fixed date for Hei Bai Wu Chang’s birthday, it depends on the practices of each temple or community. For devotees, the essence lies not in the exact date, but in offering sincere respect and devotion.
The Power of Hei Bai Wu Chang Amulets
With the rising popularity of Thai amulet culture, amulets depicting Hei Bai Wu Chang have also appeared in certain regions. Believers generally attribute the following benefits to these amulets:
Protection from evil: Safeguarding the home and warding off malevolent forces.
Resolution of conflicts: Reducing gossip, slander, and injustice caused by ill-intentioned people.
Upholding righteousness: Serving as a reminder to the wearer to remain upright, practice virtue, and walk the right path.
Fortune and guidance: Some believe they help improve career prospects, relationships, and overall luck.
Hei Bai Wu Chang are regarded in folk belief not only as enforcers of the underworld, but also as powerful guardians who protect devotees and uphold the balance between yin and yang. Whether during the Zhongyuan Festival or in daily life, sincere worship of them is believed to bring blessings, ward off evil, and safeguard peace and harmony.
Their presence also serves as a reminder to all:
Karma is clear, and good and evil each reap their due.
One should revere heaven and earth, cultivate virtue, and maintain a righteous heart.
In the impermanence of life, offering worship to Hei Bai Wu Chang with reverence and gratitude is not only a way to seek protection, but also a reminder to walk the path of goodness. By keeping faith, acting with integrity, and practicing compassion, one may enjoy lasting blessings and peace.