In Legend of Zhen Huan, why did Zhen Huan kneel every time she dressed the Emperor?

Because the Emperor is the Son of Heaven, kneeling to dress the Emperor is out of respect for the Son of Heaven.

Zhen Huan since entering the palace, in anything above all seem very cautious, even in the later to get Yongzheng's favor, but also not as arrogant as Hua Fei, things are still very cautious. Not only in front of outsiders is very careful, even in front of the emperor, she did the same. Although her favor is the only one in the harem, she has not forgotten her position. These can be seen from Zhen Huan and the Emperor when they talk together, no matter how much the Emperor favors Zhen Huan, Zhen Huan is very careful in every time she speaks.

And it is also reflected in the fact that every time she gives the emperor clothes, she kneels on the ground, which also represents her admiration for the emperor. Yongzheng was first the monarch and then her husband, which is why she was able to become the head of the harem at the end, something that I believe even the empress had never thought of. And she can get the emperor's favor, obviously not without reason, Zhen Huan not only in appearance looks very outstanding, the character is also very pleasing, and smart mind, more rare is after being favored, she did not indulge like others.

There was no such practice when Hua Fei dressed the emperor, and every time she dressed the emperor, she stood. Because Hua Fei's character is more domineering and arrogant, it never occurred to her that there was such a thing. That's why, in addition to Concubine Hua, the Empress saw Zhen Huan as her only formidable enemy, and after Concubine Hua's death, the Empress created a lot of incidents to try to clean up Zhen Huan. Eventually, through the incident of Empress Pure Yuan, Zhen Huan was sad to leave the palace.

But at the end of the failure is still the Empress.