I check the time to beat and notice that Bloodborne: The old hunters edition only takes less than 10h to beat while the standard takes more than 30h to beat. So does Bloodborne: The old hunters edition include the standard edition? I heard that this game is good so I want to try it out. Thanks
No, 'The Old Hunters' is DLC and requires already owning the base game to be able to play.
The 10 hours referenced in the time to beat is for the 'The Old Hunters' DLC only.
If you want to buy both the main game and the DLC in one package you need to get the 'Game of the Year' Edition.
Edit: Further to Kodama's comment, it seems that 'The Old Hunters Edition' is an Asian region special edition that includes the base game, DLC, soundtrack and strategy guide. This is a physical version of the game, not to be confused with 'The Old Hunters' which is a digital only DLC referenced above.