It's Dragon Boat Festival Here in Taiwan (With Pictures)

The author says the Hakka are Taiwanese aboriginal people, but I'm not sure they are. They're not recognised as aboriginal by the Taiwanese government [1].

[1] https://en.wikipedia.org/wiki/List_of_indigenous_peoples_of_...

They are absolutely not. The author is clearly confused from drinking too much 雄黃酒 even while claiming the contrary.

Nice pics, having the Night Markets really adds to the festivities. Here is some info + pics on the dragon boat events here in Southern California:

https://www.scdbc.org/

Are the traditions similar in Mainland China?

Yes, very much so.