Here are some of the most popular legendary stories about the Mid-Autumn Festival.
It's a specific Festival, so use 'the'. :D
By the way, it would be more than helpful if you could subject your posts with words like 'the' or 'Do I need to use 'the' or 'Does Festival need 'the'', and so on. Also, do you have a name or a cute word you'd like to go by besides Helped Wanted? It should be help wanted, no -ed. :D
All the best,