Power Line being hit by lightning in China or was it a UFO?

It is said that a lightning suddenly struck the air causing an enormous explosion on the ground in Shenyang in China on August 4, 2020 but was it lightning?


The video uploaded by Aric Chen on his Twitter account shows the moment a high-voltage power line being hit, and then lit the trees, causing a huge fireball.

But the video also shows something else. 

At the start of the footage you can see an unknown black square object that is clearly moving along the first tower before it goes downwards just before the explosion.


Could it be that the explosion/fireball was caused by this unknown black object (maybe an experimental craft to control the weather and something went wrong) or was it lightning after all?