CLEAN : FILE: Chinas tennis star Li Na retires over knee injuries

The video features a Q&A session with four star players, discussing career highlights and aspirations. One player shares their highest career ranking and expresses a desire to become the number one in the world, emphasizing the importance of setting high goals.

What is the significance of the current ranking mentioned in the text?

What emotions or thoughts does the speaker convey regarding their past rankings?

What does the speaker express about their career aspirations?

How does the speaker feel about being number one in the world?

What does the speaker identify as their goal?