The yellow emperor once asked the true emperor for Tao. What does this real emperor mean?

First of all, I suspect that you are mistaken. An innocent emperor, not a real emperor.

Naive Emperor is an ancient immortal who robbed Taoism and cultivated truth. "A Mirror of Taoist Immortals' Statues in Past Dynasties" says it is grotesque, magnificent, nine feet long and covered with black hair. When Emperor Xuanyuan was in power, he lived in seclusion in Emei Mountain and built a house with jade under the cliff. The seats in the room are all made of gold, the waiter is a fairy boy and a girl, and there are three people sitting with Hao Qing Wang Xian. When the Yellow Emperor visited, he was given "Five Teeth and Three Ones". Later, I met the Yellow Emperor under Mount Emei and was awarded the classic of Mount Taishan Lingbao traveler. Later, he met Di Ku in Mudetai, and presented the Traveler's Classic to Di Ku with Taishan Lingbao. The Taoist Classic "Shangqing Dabao Classic" means that the classics passed down by its name are true classics.

The above is from Baidu Encyclopedia, exploring who Ya really is.

The Yellow Emperor once went to Emei Mountain to ask the true emperor for help, and the true emperor gave him the six noble figures and the six-armor, three-Tibet and one-armor methods. The immortal driver of Taishang Laojun also came to Emei Mountain to teach the Lingbao Sutra to the Yellow Emperor. At present, Mount Emei still has the landscape left by the Yellow Emperor when he patrolled the road: Shengji Temple is the place where the Yellow Emperor asked; Fenghuangping is the place where the Yellow Emperor asked the real emperor for Tao. There used to be Daotai and Dao Ji Hall. Sanwangpo Zhongfeng Temple is the place where the Yellow Emperor visited the real emperor three times. The left bridge of Qingyinge Shuangfei Bridge was built by the Yellow Emperor in the middle reaches of the mountain. Jiulao Cavern was a real person when the Yellow Emperor visited the emperor. When he saw an old man standing outside the cave, he asked him if he had a partner. The old man replied that there were eight, so he was called Jiulao Cavern. According to legend, Huangdi alchemist Jiuding Danfa was later inherited by Zhang Daoling. After the Yellow Emperor became immortal, he was ranked as the third god on the left, and was called "Fu Yuan Zhen Xuanyuan Yellow Emperor".

Shennong, on the other hand, ruled the world at the age of 200. During the day, he ascended to heaven and became emperor, and was called Lingbao Xudi.

Thus, after Shennong ascended to heaven and became immortal, he was called the virtual emperor.

Thus, the Yellow Emperor ruled the world by Tao for one hundred and twenty years, ascended to heaven in Dinghushan during the day, and went to Taiji Palace, where posthumous title was a real person.

It can be seen that after the Yellow Emperor ascended to heaven and became immortal, he was called a real person among the Yellow Emperor.

After that, Xuanyuan family prospered. On October 5th, the first year, Taishang Laojun visited Mount Emei and gave Jason Wu, a treasure of the Yellow Emperor, Wen Zhen.

Yesterday, the Yellow Emperor went east to Qingqiu, crossed the windy mountain, and met a real person in Zifu, which was influenced by Huang San characters.

These words tell us a message: even if the brilliant people after the Yellow Emperor are real people, it is useless to use the word "X Emperor" as a real person.

Therefore, it is the "Huang San" among the Three Emperors and Five Emperors who dares to use it.

The Yellow Emperor is useless, which means that there is no such thing as Huang San in the Yellow Emperor.

Fuxi, Nuwa, Sui people, Shennong

As I said before, Shennong is a virtual emperor, and Nu Wa can't be a real person. You can tell from the name that it is not a real person.

So ... Fuxi. ...

I'm exhausted ... you read it wrong yourself.