Ya Zi(睚眦):
In Chinese, it is pronounced as: yá zì，Written as:

Ya Zi is one of the nine offspring of the loong, a figure from ancient Chinese mythology. Its image and characteristics hold unique symbolic meanings in traditional culture.
Ya Zi is typically depicted as a fierce Divine Beast resembling a loong, with a majestic appearance and a robust physique. Its image is often associated with bravery and authority.
Known for its belligerence and ferocity, Ya Zi is said to relish combat, possessing a strong aggressiveness. These traits make Ya Zi a symbol of strength and courage. Due to its combative nature, Ya Zi’s image is frequently used as decoration on weapons such as swords, implying deterrence and protection. Ancient weapons were carved with the image of Ya Zi not only for ornamentation but also as a symbol of the sword’s power.
The idiom “Ya Zi must retaliate” describes a mentality of avenging even minor grievances, depicting a person as narrow-minded and vengeful. This idiom originates from Ya Zi’s combative personality.
In ancient China, the image of Ya Zi was commonly carved on weapons, especially on swords, to symbolize strength and protection. In some ancient literary works, Ya Zi is described as fearless and valiant, representing an indomitable spirit.
Ya Zi symbolizes bravery, strength, and an unyielding spirit in Chinese culture. It also serves as a reminder of the importance of having a broad mind. Its image is particularly common in weapon decorations, symbolizing strength and protection, and has also become a cultural caution, advising people not to hold grudges too tightly.