Which is six arms or eight arms ?

# The Devil Child of Nezha Comes into the World#What is the "six arms" or "eight arms"? 】 The image of Nazar, who has a necklace around the universe, arms around the goddess, foot on the wheel of wind and fire, and a firearm in hand, has been deeply rooted in the hearts of the people. However, there are different descriptions in different works about whether Nazha’s body is "three heads and six arms" or "three heads and eight arms".
In Journey to the West, Na Ni is described as "three heads and six arms". In the fourth chapter, Na Ni is angry and shouts, "Change!" That’s three heads and six arms.
The Romance of the Seal of God 76 Chapter: Nezha lifts a spear gun, and Fang wants to drive away, only to see a sound on the left and an arm grow out. "What’s wrong?" he said in surprise. Before I could finish, an arm grew on my right. He was startled. Only heard the sound of the left and right, six hands, a total of eight arms; and three heads. Neck panicked and helpless, he thought to himself, "Go back and ask my Master to come." He had to climb back to the fire wheel and go to the entrance of the cave. The real Taiyi man came to the head of the door and clapped his hands and laughed and said, "Wonderful! Strange! " There are poems as evidence: "Qiongjiang three through three passes, fire jujube frequently added to the official Yan. Eight arms have become a magic trick, three heads do not wait idly. Change must be extraordinary, and the wind and thunder will go back and forth in an instant. It’s not a heretic from Siqi, just because of the evil intentions of heaven."
Said that Nazao came back to see Taiyi real man, said: "disciples grow these hands, Yaya fork, how to use soldiers?" The real man said, "There are many foreigners in Ziya camp. However, there are winged, changeable, ground walkers, rare and precious people. Now you have three heads and eight arms, and you can live up to what I have told you in the golden cave. When I went to the Wuguan Pass, I also saw that the Zhou Dynasty’s figures were rare and outstanding. This method is hidden, but in your own mind." Thank you for your kindness. Taiyi’s real person handed down the method of concealment and rejoicing, holding the circle of heaven and earth in one hand, mixing the heavens in one hand, holding bricks in one hand, holding two pointed guns in two hands, and still empty-handed. The real man took the Kowloon god fire cover and the Yin and Yang sword into eight weapons.
In fact, both Pilgrimage to the West and Romance of Fengshen are based on the folklore of "Nezha". Both Pilgrimage to the West and Romance of Fengshen were written in the Ming Dynasty, so it’s hard to say who can learn from the characters in these two novels.
However, in the Water Margin, there is a character named Xiang Chong, who ranked 64th when Liangshan Dajuyi was gathered. He was a flying star in Shangdi and served as a general school of infantry. The nickname is "Eight Arms Nacho".
Shi Naian, the author of Water Margin, was a novelist in the late Yuan Dynasty and the early Ming Dynasty, while Wu Chengen was a novelist in the late Ming Dynasty.
The nickname "Eight Arms and Six Arms" in "Water Margin" originated naturally from the folk legend of "Eight Arms and Nazar", because "Water Margin" was written earlier, so we can infer that the image of "Three Heads and Eight Arms" at the beginning of "Water Margin" should still be "Three Heads and Six Arms" instead of "Three Heads and Six Arms" in the novel "Journey to the West", perhaps the author. It is considered that "three heads" and "six arms" are more symmetrical and coordinated.
Another is that the Nezha prototype came from India. In Indian mythology, vajra, fork of night, Brahman, even Shiva and Vishnu all have multi-sided and multi-arm shapes, while in the Central Plains Taoist immortals there is almost no such.
In the first year of Tang Zongzhang (668), Buddhist monks and Taoists, Fayuan Pearl Forest Volume 9: "Every Buddhist monk has a rude physique, poisonous body, awesome prism and astonishing crowding. He comes out with three heads, eight arms, crossing mountains and seas, turning the sun into clouds."Beijing also has a call "Eight Arms Naju City".