What constellation is Yin Ye?

There are two different views about Yin Ye's constellation:

1. One argument is that he is a Leo, because his birthday is 1979 August 14, and Leo's birthday is from July 23rd to August 22nd.

Another way of saying this is that he is a Gemini, because as can be seen from his resume, he is good at burying his head in research, has a strong interest in knowledge, and is willing to explore the unknown world. These are the unique characteristics of Gemini.

Both of these statements can be attributed to the fuzziness of Yinye's birth date and constellation. So his sign should be Gemini or Leo.