Oh My God! So, Wang Bong is actually our that Aunt Bong?

"You mean you don't need to warm your water on flames to get hot water?" asked Yuri curiously.

"No, we don't. You see, this heater, it directly converts the electrical current to heat. There is a resistor present inside the heater, the currents pass through the resister which converts the electrical energy into heat, it works on the principle of joule's law, which is…" Min tae was explaining things in details, a bit too details, so Mary stopped her.

"They understood. Don't go on depth, physics genius! There are a lot of changes, which has happened in these past centuries, which led to a modern world. So, world in twenty first century is quite different than world now" said Mary seriously while keeping her hand on her sister's mouth.

"Do we talk to aliens? Do we have aliens too?" asked Wei with curiosity.

"Nope, no aliens. I think they were telling lies in those movies. But we do have robots." said Sashi after thinking for a while.