I started to play tennis in the September of 2023 in order to spend more time with my mom, when she visited me in the United States (2023 Aug - 2024 Jan).

I started to actively learn it from 2025 May when I graduated from my Ph.D.

In this journey, I met many people in Tempe Arizona, Zhejiang, and Shenzhen - they constitute a huge part of this journey.

I will not ellaborate the name of these many people, because nothing is permanent (including your guiding star).

Anyway, I hope every tennis friend improves their skills.