What do you mean by tall feet?

Gaozu is a respectful name for students, which means students. Gaozu originally referred to a fine horse, because in ancient times, handsome people were described as swift horses, so there was the saying of Gaozu.

Gaozu wrote Shi Shuo Xin Yu. Literature: "Zheng Xuan was under Ma Rong's door and could not meet each other for three years. It was only taught by the high-impedance disciple. " It means that Zheng Xuan studied under Ma Rong and didn't see Ma Rong for three years. It was taught by Ma Rong's students. Great-grandfather is generally used to be polite, for example: Is this the great-grandfather of Miss Wang? Nice to meet you! Nice to meet you!

Extended data:

Gaozu's allusion is studying in Zheng Xuan. Zheng Xuan studied under Ma Rong and only under Ma Rong's apprentice. Ma Rong used the armillary sphere to calculate the position of celestial bodies, which was not accurate. No one could explain it clearly to his disciples. Some people say that Zheng Xuan can solve this problem, so Ma Rong looked for Zheng Xuan to calculate, and Zheng Xuan got the result. Everyone was amazed and admired.

Later, when Zheng Xuan learned that he had left, Ma Rong lamented that "music and rites have gone east with Zheng Xuan". Ma Rong is worried that Zheng Xuan's reputation will surpass his own, and he is very jealous. Zheng Xuan also suspected that they would kill him, so he sat under the bridge and stepped on the water with clogs on his feet. As expected, Ma Rong is turning the steering wheel to predict his whereabouts. He said to the people around him: "Zheng Xuan is now lying on the ground, stepping on wood, which is a sign of certain death." So he stopped chasing and Zheng Xuan finally ran away.