The Yis used to believe in multi-deity, and worship their ancestors. They have many folk festivals, such as the October Festival, the Firebrand Festival, other local festivals and the worship activities.

 October Festival

It is the traditional festival of the Yis. It mostly takes place in a selected lucky day during early October of the lunar calendar. The festival lasts 5 to 6 days. Duing the festival, people will slay pigs and sheep. The wealthy family will slaughter cattle. On the occasion, the feast will be offered to guests and people are dressed up. They will visit their relatives and friends and send presents to each other.

 Firebrand Festival

It is the largest traditional festival of the Yis and takes place on June 24 of each lunar calendar year. On the occasion, the cattle and sheep will be slain to worship the ancestors. In some areas, people also worship the Tuzhu (the god of the earth) They invite each other to feasts and take meat together. The Firebrand Festival usually lasts three day. The 1^st day is for the family reunion, while the last two days are for the wrestling, horse race, bull fighting, boating and push-and-pull, etc. Afterwards the large need fire evening party will be held, which will last all night long.

 Second Spring Festival

Between February 10 and 11 of each lunar calendar after the New Year, the Yis in Sichuan, Yunnan and Guizhou provinces will celebrate the Second Spring Festival.

Of all the worships, the largest is the worship to the dragon, which is to be held on a Dragon day in February, March or April. People from the same village will gather under the dragon tree to hold a collective worship, with a bowl of rice and a piece of salt in everyone's hands. The Yis in Yunnan select the 1^st Dragon day in January to worship the dragon. After the worship, all people get seated on the ground, regardless of their age. People take food and dishes prepared beforehand and have diner together.

 Flower Fair in March

The Flower Fair in March is the traditional folk festival of the Yis in Yunnan Province. It takes place on March 13 of the lunar calendar.

It is the season when the flowers are blooming. Young men and girls of the Yis from far and near are dressed up on this day, and gather on the slope of the Flower Mountain. They sing and dance till the sunset. Some young couples chat with each other. They hide themselves in dense woods and have intimate talks if they are satisfied with each other.

Legend has it that in the ancient times, the Yis had inner contradiction and even wars because of the misleading of an alien ethnic group, which seriously destroyed the harmony and quiet living environment of the region. Afterwards, they became reconciled on March 13. Hence, people dance and sing on that day to celebrate. Year after year, it finally became the folk festival of the Yis.

 Firebrand Festival

The Firebrand Festival is the traditional festival of the Yi ethnic minority, one of the minorities of China. It is held on the 24^th June of the Chinese lunar calendar. Not only the Yi people celebrate the Firebrand Festival, but also other minorities such as the Naxi, Bai, Lahu and Jino observe the festal celebration.

Prior to the festival, every family has to store up food in order to enjoy as much as they like in the gathering.

The Firebrand Festival usually lasts three days. The first day will be reserved for the family reunion feast. People cut the cooked meat into lumps for the worship of gods and ancestors. Afterwards, the offerings are used for the feast. During the evening, the fires light around and commonly last three nights. People in the village, excited, uphold the firebrands and walk around the village and the field like one thousand fire dragons soaring.

On the 2^nd and 3^rd day, the Firebrand Festival is up to its upsurge. Young men put on their new clothes and wear head wrappers decorated with a hero knot; women put on their pleated skirts. They gather on the vast meadow and hold various traditional sport competitions. Young men hold   wrestling, horse racing and arrow shooting contests. Women sing, dance and play oral string instrument. In some areas, people slay swine and sheep to worship their believed god. As they consider that fire can drive away ghosts and demons, they set off the firebrands and light up households one by one. They add rosin on the firebrand while walking.

On the Firebrand Festival, the most animated is the scene of the bullring. The bullfight is not only a kind of entertainment, but also a good practice for the selection of bull for breeding. It is of great significance for the promotion of the agriculture and stockbreeding. The one, whose bull has won in the contest, will be considered the master hand of the stockbreeding and at the meantime, idol for girls.

Prior to the bullfight, every village will send their deputy and pull the selected strong bull to the bullring. The dressed up audience come to enjoy the sight. A person of prestige will announce the beginning of the contest. At this moment, it comes a deafening sound of beating the gongs and drums; trombone care calling together, the firecrackers sound earsplitting. Young men and girls in couple play the tri-string instrument around the bullring and perform festal dances.

In the animation of the jubilation, the contestants pull their big, strong and sharp-horned bulls to the bullfight for the inspection of the referee. At the order of the referee, the contestants release their bulls and let them have a fierce fight. The fierce bull cocks its horn and raises its hooves, charges at its opponent. They wrestle with horns until the rival is defeated. The winner will be awarded a ball-shaped prize hung on the pole erected on the border of the ground.

Another important activity during the Firebrand Festival is wrestling. The contestants wear short pants only and are barebacked. They embrace to show their kindness. At the order of the referee, they start wrestling and fall over the rival. The one will lose the game if his shoulder touches the ground. The scene of the contest is spectacular. One place of the wrestling attracts crowds of viewers. The audience in festal costume surrounds to watch the contest with cheers. Young men carry their tri-string instruments and flutes; girls with embroidered bags. The music and dance put the contest in a great animation.

The Miss Beauty run in the festival is a feature program. An elder of prestige will be the judge. At the beginning, the contested Yi girls stand in a circle: each one holding the handkerchief of the one in her front, singing elegant folk songs and walking in circles. In the meantime, young men form a large crowd around the girls, and behave in a generous way.

As a young man has found his beloved girl, he will hand up the judge the gift he has prepared and ask him to deliver the gift to the girl. The girl who gets maximum gifts will be elected as the Miss Beauty. When the Miss Beauty crowned girl leaves the ground with many gifts, her friends and relatives will crowd around her and express their greetings; the young men come to surround her to show their aspirations by playing yu-kin.

The Firebrand Festival creates the good chance for young men and girls to get to know each other and select their lovers. During the festival, they enjoy themselves by upholding the firebrands and gather in a mountain and a field to hold the need fire party. They play music and sing around the need fires, enjoy dancing and singing all night, in order to find their lovers. The winners of the bullfight and the wrestling often become the ideal icon to be courted and loved.

On the 4^th day, the ash of the firebrand will be cleaned up. The feast will be arranged for the worship and this is made to pray for good luck.