Hi Nicke,
I have never tried 'Yadong', but obviously it means 2 things.
'Yah' is medicine and 'dong' is a word in english we use for the ****.
So.......
Yadong must mean '**** medicine'
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The photo is very hard to tell who is a ladyboy.
But.........
I make a very big bet that it is the one in black on the right.
Photo 1 you can see them a little bit. Nobody knows if man or woman.
Photo 2 you only see an arm. But it has strength and veins just near the elbow like a man.
The fingers are painted black.
There are so many 'little' details that give away a ladyboy.
The 8" slong resting on your chin normally gives it away in the morning