You want to ask what these two sentences mean.
The hidden dragon in Yuan Teng will be in the sky for nine days, which means that there are ups and downs in life. We should not get lost in the troughs but should always be prepared to succeed when there is an opportunity.
With the sharp edge out of the sheath, whoever can compete with it means that when the sword is out of the sheath, you will be invincible and invincible. It is a metaphor for an invincible hand with strong martial arts skills.
The original text of "Three Ming Tonghui": The flying dragon leaves the sky and follows the clouds into the abyss; the hidden dragon is in the abyss and follows the clouds to the sky. Dalinlong is on duty in Tianhe, and all the Sikutu are in the ninth and fifth places. Vernacular translation: The flying dragon left the sky, passed through the clouds, and dived into the deep water. The dragon lurking in the deep water flies up to the sky with the clouds. Long Fei guarded the four pillars of the Tianhe River during the Wuchen period. When the four seas are ready and the world is covered with rain, he will definitely become a great person in the ninth and fifth places.