VIDEO: Roger Federer singing happy birthday in Chinese

It’s the video we have all been waiting for: Roger Federer signing happy birthday in Chinese.

The 20-time Grand Slam winner joined in the fun to celebrate the 10th anniversary of Rolex Shanghai Masters, which he is due to compete in later this year.

The 2018 Rolex Shanghai Masters starts on October 6 with Roger Federer the defending champion having beaten Rafael Nadal in last year’s final.