While the divine child waited in the heavens for his descent to the human world, the great teacher Pema Tötreng began searching for suitable parents for the divine child. The father was chosen from the ancient royal lineage of the Mu-Bu Dong Clan of Ling. This royal lineage had branched into three families by the time of their ancestor, Chupen Nabu, who had three wives.

The first wife, Saifei, gave birth to Laya Dagga.
The second wife, Wenfei, gave birth to Chijang Banjié.
The third wife, Jiangfei, gave birth to Zhajie Benmei.
The three sons became the leaders of the Senior, Middle, and Junior lineages.

From the Junior lineage, Zhajie Benmei fathered Tuola Ben, who in turn fathered Chuna Pan. Chuna Pan married three wives: Rongfei, Gafei, and Mufei. Rongtsa Chagen, the chief of Ling, was the son of Rongfei. Gafei had a son named Yujie, who was later captured during a war with the Hor people. Mufei had a son named Senlen, who was believed to be an incarnation of the Brahmin Raijin and was known for his gentle demeanor and kind heart.

Rongtsa Chagen married Meiduo Zaxicuo and had three sons and one daughter:

First son: Yupeng Dajie
Second son: Lianba Qujie
Third son: Ang’ou Yuda
Daughter: Namu Yuzhen

Senlen married Naga Zhuoma, a woman from the Jiana region, and on the first day of the 12th month in the Year of the Water Ox, they had a son. This boy was extraordinary from birth—his face was round like the full moon, his eyebrows were clean and distinct, and he grew remarkably fast. In one month, he grew as much as other children did in a year.

The family named him Xielu Nima Rangxia, but outsiders called him Bumba Gyatsa Xiega. On the 13th day after his birth, the family held a grand feast in celebration. Leaders from the Senior, Middle, and Junior lineages—Rabulang Kaxie, Lingqing Tawi Suolang, and Rongtsa Chagen—each tied a ceremonial scarf around Gyatsa’s neck as a blessing. Rongtsa Chagen declared:

“This is a sign of happiness for the Radgabu Clan,
A symbol of rising power,
The beginning of a fulfilled prophecy,
And the start of conquering the four demons.”

Gyatsa grew up quickly and was soon known as Gyatsa Daren.

One day, the emperor of Jiana summoned his three nephews to the royal palace:

Nyechi Gaqing, prince of the Jiang Kingdom;
Laburei Bao, prince of the Hor Kingdom;
Gyatsa Xiega, prince of Ling.

The emperor gave them many treasures, including gold, silver, and jewels. The most precious gifts were a horse, a sword, and a suit of armor for each of them. The three princes were overjoyed and returned to their respective countries with their attendants.

During Gyatsa’s time away, a war broke out between the Guo Tribe and the Ling Tribe over a border dispute. In the conflict, Lianba Qujie, the son of Rongtsa Chagen, was killed by the Guo Tribe. The people of Ling, knowing Gyatsa’s bravery and fiery temperament, decided to hide the news from him.

One day, while hunting, Gyatsa killed a deer by a mountain spring. As he prepared to divide the meat, a beggar woman and her son arrived at the spring. Hoping for a share of the meat, the beggar woman said:

“Honorable Gyatsa Daren, it is good that you have returned! Last year, while you were in Jiana, the Guo Tribe went to war with the Ling Tribe. During the fighting, the chief’s son, Lianba Qujie, was killed by the Guo people. Everyone in Ling says that if you were here, this tragedy could have been avoided. Without you, Ling is truly in danger!”

The woman then explained the entire war in detail. Gyatsa listened, and his anger burned fiercely. It was as if a million arrows had pierced his heart. Without hesitation, he mounted his horse and rode straight to Rongtsa Chagen.

When Rongtsa Chagen saw that he could no longer hide the truth from his nephew, he tried to dissuade Gyatsa from seeking revenge. He said:

“It is true that Lianba Qujie has died, but we have already avenged him. We killed all the men of the Guo Tribe, leaving only widows behind. The only group untouched is Ranluo Dunba’s clan, because they are protected by the Dragon King and powerful spirits. The Dragon King’s daughter resides in their camp. This is not an enemy we can easily defeat. Nephew, it’s best not to act impulsively.”

But Gyatsa was determined to avenge his cousin. No matter how much Rongtsa Chagen tried to persuade him, it was useless. Seeing that Gyatsa could not be stopped, Rongtsa Chagen reluctantly agreed to lead an expedition to the Guo Tribe for revenge.

Gyatsa’s other uncle, Chao Tong, had different thoughts. He reasoned:

“Gyatsa is brave enough to grab a lion by its ears and strong enough to capture a white lion alive. If we let him lead the army to the Guo Tribe, he will surely destroy them. And if that happens, the Dragon King’s daughter and the treasures of the Dragon Palace will all belong to him. How can I let this happen?”

Chao Tong came up with a plan. He decided to warn the Guo Tribe. Writing a letter, he said:

“To Ranluo Dunba Kyanzen,
From Darong official Chao Tong:

To avenge the chief’s son, Gyatsa and his men are gathering forces and will march on the Guo Tribe the day after tomorrow. You will not be able to resist them in battle. It’s better to retreat early. I am doing you a favor this time, and I hope you will repay it in the future by giving me the Dragon King’s daughter.”

Chao Tong tied the letter to an arrow, recited a spell, and shot it toward the Guo camp.

When Ranluo Dunba Kyanzen received the letter, he immediately warned the remaining women, children, and elderly of the Guo Tribe to flee. He also packed up his own belongings and prepared to escape with his family. However, the treasures of the Dragon Palace, including the Dragon Palace’s tent and the Great Prajñā Sūtra, were too heavy for any yak, horse, or mule to carry. Only the green-horned dragon cow could bear the load.

As the Guo Tribe began their retreat, the green-horned dragon cow suddenly ran in the opposite direction. Strangely, no one except the Dragon King’s daughter, Meiduo Nazé, could see the cow. The Dragon Princess, who had been riding a horse, turned her mount around and tried to chase after the cow. However, her horse refused to move in that direction. Left with no choice, she dismounted and followed the cow on foot.

The usually docile green-horned dragon cow became wild, leaping and running, staying just out of reach. Whenever Meiduo Nazé tried to catch it, the cow would run farther. When exhausted, she would stop to rest, and the cow would also stop to graze, keeping just enough distance between them. Hungry and thirsty, Meiduo Nazé was completely drained but continued to chase the cow.

Meanwhile, Gyatsa led the Ling army to the Guo Tribe’s territory. When they arrived, they found nothing but an empty wasteland—only traces of animal dung remained. Seeing this, Gyatsa was puzzled. He wondered aloud: “Where could the Guo people have gone? How could they have fled so suddenly? Could it be divine intervention, preventing us from destroying them? No matter where they’ve gone, we must pursue them.”

Gyatsa’s determination inspired the younger warriors of Ling, who were eager to track down the Guo Tribe. However, his uncle Chao Tong objected: “We don’t know where they’ve gone. How can we chase them aimlessly? It’s better for us to return home.”

Some of the older, more cautious members of the army agreed with Chao Tong, but Rongtsa Chagen intervened: “The warriors of Ling never return empty-handed. Let’s ask Senlen to perform a divination to see where the Guo people have gone and what we should do.”

Everyone agreed. Lacking proper divination tools in the wilderness, Senlen performed an arrow divination. The result was clear: “After one meal’s time, you will not need to unsheathe your swords or notch your arrows. Both treasures and a beautiful woman will be delivered to you.”
Chao Tong scoffed at the prediction and mockingly said: “If we’re going to get treasures and a beautiful woman without even fighting, then everything we gain should belong to you, Senlen.”