Hong Kong superstar Jackie Chan caused fans to worry last month when he appeared at an event with a head of grey and white hair.

The star has been silent about the Internet chatter till yesterday (April 7) which happened to be his 70th birthday."

Jackie broached the topic by sharing pictures of his younger self on Instagram.

“Even before today, many friends have been reminding me: Jackie, it’s going to be your 70th birthday.” Every time I hear this number, my heart would stop for a second. I’m 70 years old already?” he wrote.