Child Actor or Child Labour

This is a family of four (their is is one more infant in the mothers lap) I saw at Chennai/India as I was in my room I heard loud bangs on some sort drum and metal pans. I looked thru the window and saw this. They have made makeshift tightrope with some sticks and some rope on the road it self. and pegged the rope in the road. As they start to bang the drums she ( abt 3-4 years) start to walk on the rope. She walked barefoot, with slippers on , and rolling a bicycle wheel, and also walked balancing a something on her head. And surprising thing is she walked without any safety nets or harness

And all this act was just to earn something for the family. I wondered why the kid has to all the hard work at this age. When his father & mom and able bodied and strong healthy people. I cannot name any other name other than child labour for this act.