A letter!
4 seconds sound clip from the Five Fingers of Death movie soundboard.
You can hear this line at 00:40:53 in the DVD version of the movie.
Quote context
[...]
- Later on, Mr. Okada is going to help us finish off the opposition.
- I hear Mr. Hsin's teaching you the Iron Fist technique. Is it true then?
- You know I'm no match for you. Let's forget the idea.
- Come on!
- Dad, there's a letter from Chih-Hao!
- Come on, read it to me! You lads carry on, huh?
- I should have stayed at home to help you like a dutiful son.
- I was sad to say goodbye, and I'm thinking of you, and Ying Ying every moment of the day.
[...]