Swiss former tennis player Roger Federer (R) hugs singer Eason Chan during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Bai Xuefei)

Chinese table tennis player Fan Zhendong serves during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Xu Yanan)

Swiss former tennis player Roger Federer is seen during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Xu Yanan)

Swiss former tennis player Roger Federer (2nd L), singer Eason Chan (1st L), Chinese tennis player Zhang Zhizhen (2nd R) and Chinese table tennis player Fan Zhendong pose for photo during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Xu Yanan)

Swiss former tennis player Roger Federer is seen during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Xu Yanan)

Swiss former tennis player Roger Federer is seen during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Bai Xuefei)

Swiss former tennis player Roger Federer (L) and Chinese tennis player Zhang Zhizhen pose for photos during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Bai Xuefei)

Swiss former tennis player Roger Federer is seen during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Bai Xuefei)

Swiss former tennis player Roger Federer is seen during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Bai Xuefei)

Chinese table tennis player Fan Zhendong competes during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Bai Xuefei)

Swiss former tennis player Roger Federer is seen during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Xu Yanan)

Swiss former tennis player Roger Federer (Rear) hugs singer Eason Chan during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Xu Yanan)

Swiss former tennis player Roger Federer (L) is seen during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Xu Yanan)

Swiss former tennis player Roger Federer (R) talks to singer Eason Chan during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Xu Yanan)

Chinese tennis player Zhang Zhizhen (R) and Chinese table tennis player Fan Zhendong are seen during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Xu Yanan)

Swiss former tennis player Roger Federer (R) is seen during the Roger Federer Fan Day event at the ATP World Tour Shanghai Masters tennis tournament in Shanghai, east China, Oct. 11, 2024. (Xinhua/Xu Yanan)