I've only grown eggplant once, and I don't remember what the seedling looks like although I would think it should look like this:
And not this?
Because this guy (I put 2 pictures together) is right in the center of a pot like he owns the place, and Ping Tung long is planted in it.
Both Pots were seeded with 'Ping Tung Long'
The first picture is a separate container which was also recently planted. I'm guessing the second picture is the weed?