Sun Moon Mountain, with an average altitude of about 4,000 meters, is called "Nima Dawa" in Tibetan and "Nalasara" in Mongolian, both of which mean the sun and the moon.

There is a story among Qinghai folk that in 640 A.D., Princess Wencheng married Songtsen Gampo. When Princess Wencheng traveled to Chiling, she was about to leave the land under the jurisdiction of the Tang Dynasty, and her heart was full of sorrow. Looking forward to the west of Tibet, the sky is high and the clouds are low, and the grassland is vast; looking back to the east and looking at Chang'an, I am even more nostalgic for my homeland. Then he took out the "Sun and Moon Treasure Mirror" given by the queen, took care of the scenery of Chang'an and his relatives, and couldn't help but cry sadly, and the tears of homesickness gathered into an inverted river, from east to west, flowing into Qinghai Lake.

But when Princess Wencheng thought of the heavy responsibility of the marriage of Tang Fan, she decisively smashed the "Sun and Moon Treasure Mirror", cut off the love for her hometown relatives, made up her mind to move forward, and embarked on the road to the west without hesitation.

Qinghai Lake Riyue Mountain has a large area of primeval forest, pine and spruce are connected into a piece, on the mountain road leading to Riyue Mountain came a team of craftsmen and soldiers, the head is a hideous face of the ten, carrying a Damascus steel knife on his waist, riding a Mongolian horse, Ou Xuzi followed, also riding a Mongolian horse, Renci and a dozen soldiers drove four or five carriages, on which were put the tools for logging and several huge water jars.

The primeval forest is on the mountainside of Riyue Mountain, there are wild boars and squirrels, as well as antelope foxes and other animals, and there are horn peaks, cirques and glaciers at an altitude of more than 3,700 meters above sea level.

The ten-division commander who led the troops was called Bileg, which means "wise man" in Mongolian, Che is a complete bastard, usually domineering, no one puts it in his eyes, but the only thing he is afraid of is Ou Xuzi, Zhan Lu slashed the soldiers with a knife he has seen, the corpse is incredible, and it is terrifying.

Last night, they rested on the shore of Qinghai Lake.

Qinghai Lake, also known as "Tsowenbu", means "blue sea" in Tibetan. Because it is winter, Qinghai Lake has frozen, the vast and clear lake, frozen jade, covered in silver, like a huge treasure mirror, shining in the moonlight, the convoy perched on the lake, set up a temporary tent, Ou Xuzi and Renci live together.

The steward of China and the captain of the ten, Bileg, led the soldiers to catch fish on the lake, they have energy, and the fish is a special product in Qinghai Lake, which is known for its fresh and tender taste. As long as you drill a hole in the ice, the fish under the water will automatically jump out of the ice hole under the light, and it is easy to catch.

Ou Xuzi was not interested, Renci lit the bonfire and sat on the side, looked at him and said, "Brother Ou, is Zhan Lu really made of heavenly stones?"

Ou Xuzi nodded and said: "The ancestor got the Heavenly Stone in Zhanlu Mountain, which is actually a meteorite that fell from the sky, which contains metal substances, which is not trivial, so that it can forge a peerless sword." ”

"Then without meteorites, the sword forged will never be as good as Zhanlu?" asked Renji.

"Yes, meteorites contain special ingredients that are not found on the ground. The ancestors were only cast into the Zhanlu sword, which is unique. Meteorites are hard to find, even if my skills are good, it is difficult for a clever woman to cook without rice. Ou Xuzi sighed lightly and continued: "My Ou Xuzi's greatest wish in this life is to be able to forge a peerless blade like the ancestors, and it is not in vain to this life, but unfortunately, this wish is difficult to achieve." ”

Renci's eyes lit up, and he said softly: "Brother Ou, if you have the Heavenly Stone, won't your wish come true." ”

Ou Xuzi's whole body was shocked, looked at him and asked, "Is this true?"

"I heard that in 900 A.D., that is, the three years of Guanghua of Tang Zhaozong, a huge heavenly stone landed on Yuxu Peak, the heavens and the earth trembled, the sun and the moon had no light, and the heavenly stone drilled into the Yuxu Peak glacier and disappeared, the locals have been discussing this matter, and some people even want to climb the Yuxu Peak to check it personally, but the glacier is dangerous and difficult to climb. Yuxu Peak is also the birthplace of Taoism, known as 'the blessed land of Taoism' and 'the most sacred mountain', so no one dares to go anymore. Renji said.

Ou Xuzi stood up, his face was shiny with excitement, and his voice trembled and said: "If there is such a thing, isn't it God to help me, such a huge meteorite, there must be materials needed to forge a sword in it, it has landed in the glacier for hundreds of years, its nature must be extremely cold, rare for a thousand years, rare for a thousand years, Brother Renci, how to get to Yuxu Peak, I want to find it." ”

Renci shook his head and said: "The Yuxu Peak is more than 6,000 meters high, the ice peak glacier does not melt all the year round, the danger is everywhere, the danger is everywhere, it is too dangerous, and no one knows where the Tianshi falls, how to find such a large area of the Yuxu Peak? ”

Ou Xuzi fell silent.