The cast of US sitcom "The Big Bang Theory" appeared at Comic-Con this year on the show's 10th anniversary and shared an emotional moment when talking about the season 10 finale.

In a panel on Friday during the convention, the stars shared details about the shooting of the episode's final scene where Jim Parsons’ Sheldon Cooper proposed to Mayim Bialik’s Amy. Many said they cried witnessing the milestone of the seven-year relationship that started in 2010 when Bialik joined the show.

But this is not the end of the pop culture phenomenon, CBS and the Warner Bros. reached a deal in March to renew the show for two more seasons running from 2018 to 2019. The two seasons are expected to be the last of the series.

During the convention, the cast finished the panel with a chorus of "Soft Kitty", a famous lullaby from the sitcom.

2017 Comic-Con International /VCG Photo

Started in 1970, Comic-Con has grown to be the largest convention in the world with 130,000 attendants. Today's Comic-Con is not just a celebration of comic books but also sci-fi, movies, TV shows and anything that speaks the pop culture.

The 2017 Comic-Con runs from July 20 to 23 in San Diego, California in the US.

(CGTN's Han Jie also contributed to the story.)

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