Cecilia Cheung has been hitting the gym a lot more after joining the cast of Sisters Who Make Waves 2. At 40, the actress is one of the oldest participants on the show, which requires contestants to sing and dance like they're members of a girl group.

Last weekend, she posted two IG stories of her at the gym, which was made all the more interesting because she was posing with an unidentified man. His face in both photos were hidden by stickers and on one of the pics, she wrote the words 'mystery man'.

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