The robot, also called mannequin or dancing machine, is a classic street dance style which gained fame in the 1970s after Michael Jackson used the dance when he performed Dancing Machine with his brothers.
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If you put some ink on a leaf, you obtain a ink propelled boat, using the Marangoni effect. The ink has a lower surface tension than water and its flow provides thrust to push the boat forward.
This is a painting
Watercolor painter Liu Yunsheng's artworks are famous for their fluidity, realism, and transparency, as well as for the richness and complexity of their characters.